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freshwater industry - Freshwater only makes up a tiny portion of the earth’s total water and yet it is as important to our economy and industry as it is to our bodies to stay alive. Industry is the second largest withdrawer of water only behind agriculture. There are many aspects of freshwater industry ranging from power generation to fishing. There are two main categories freshwater industry can be split into and these are withdrawal uses, these remove the water from it environment for use and in stream uses in which the water isn’t moved....   [tags: essays research papers] 350 words
(1 pages)
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Freshwater Mussels - Freshwater Mussels Mussels are a species of marine life that inhabits many of the bodies of water in the United States. They serve as an important aspect of the ecological system of the water in which they occupy. However, the number of mussels have been declining such that many are now considered as endangered species. There are a few reasons for the decline in population, including domination by a single species of mussels called the zebra mussel. Conservation has begun on mussels because of their strong environmental influence....   [tags: Marine Life Mollusks Conservation Essays]
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1597 words
(4.6 pages)
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Solutions to Sustain Freshwater - ... As Villiers (1999) mentions, “a desalination project for 10,000 people costs the equivalent of one military tank; for 10,000 people, the price is roughly that of a jet fighter” (p.334). Coupled with the cost, the energy will be a dilemma due to the fact that it requires a lot of energy to process. As a result, these plants will trigger greenhouse gases that are vulnerable to the environment. Energy is the big enemy of desalination, and a major barrier to its widespread implementation, and do you really want to purify water by adding greenhouse gases to the atmosphere (Villiers, 1999)....   [tags: Water Scarcity Environment]
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1889 words
(5.4 pages)
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Freshwater vs. Saltwater Fishing - Comparative Essay of Freshwater and Saltwater Fishing My friend had invited me along with him and his family to the ocean. It was vacation for the family, but for him and me it was the beginning of a week of serious business. We had an obsessive hobby to pursue. As avid and long-term freshwater fisherman, we were thrilled by the thought of catching those large and exotic saltwater fish we had seen on television a billion times before. Yet little did we expect there to be such vast differences between our freshwater fishing and the saltwater fishing, which we were about to pursue....   [tags: Compare Contrast Comparative] 1303 words
(3.7 pages)
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Freshwater Challenges Facing Engineers in the 21st Century - ... New projects on the horizon of fresh water engineering include: 1. Nano-osmosis of ocean water 2. Decentralized distillation units in rural areas 3. Strategies for reducing water use CURRENT TECHNOLOGIES Desalination of ocean water presents enormous issues to be hurdled before it can be dubbed as a “solution” to the fresh water crisis. Desalination is the process which extracts the salt from seawater. Modern desalination projects use a method called “reverse osmosis,” which separates the salt from ocean water by pushing the water through a membrane at high pressures....   [tags: Environment, Environmental ]
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1050 words
(3 pages)
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Investigating the Effects of An Abiotic Factor on the Frequency and Distribution of a Freshwater Invertebrate - Investigating the Effects of An Abiotic Factor on the Frequency and Distribution of a Freshwater Invertebrate (i) Planning ------------ Introduction ============ Before a complex biological study can be planned and formulated, the terminology in the title above must be clarified. The investigation requires a sound knowledge of ecology, which essentially is the study of organisms, whether they be animals or insects, and their relationship with the environment in which they live....   [tags: Papers] 798 words
(2.3 pages)
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Investigation of the Distribution and Abundance of Freshwater Invertebrates in the Tillingbourne River at Abinger Hammer - Investigation of the Distribution and Abundance of Freshwater Invertebrates in the Tillingbourne River at Abinger Hammer Introduction My research is about the distribution and abundance of freshwater invertebrates in the Tillingbourne River at Abinger Hammer at Surrey, England. Invertebrates are living organisms without backbones therefore there must be a number of factors, which affect the way they live and reproduce. The distribution of an invertebrate is partially affected by its environment....   [tags: Papers] 4998 words
(14.3 pages)
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Water Quality in China and Bangladesh - Abstract Surface water and groundwater are the main sources of readily available freshwater. As a result, their contamination will directly affect human health as seen in China and Bangladesh. In China, the deterioration of water quality was caused by the pollution of the environment by emissions and waste products from industries, agricultural runoffs and improperly disposed sewage. In Bangladesh, natural arsenic is majorly responsible for the contamination in the groundwater. In both countries the low quality of water has greatly affected the health and social aspects of their everyday life....   [tags: Natural Resources] 2285 words
(6.5 pages)
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How did economists get it so wrong? - ... 69). Most economists would agree that government purchases would lead to a reduction in national saving and hence raising the interest rate. What about government intervention on a large scale of open economy in the long run. Again, Freshwater economists still don’t think fiscal policy is a plausible choice. When the government practices expansionary fiscal policy, whether it is an increase in purchases or a decrease in taxes, a chain of unavoidable consequences follows. First, the enactment would reduce public saving, follow by a reduction in the supply of loanable funds and drive up the equilibrium interest rate....   [tags: Economics ]
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2018 words
(5.8 pages)
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Adapting Canada to the Future of a World With Scarce Water - ... The water comes from reservoirs and lakes that trap snowmelt run-off from the Rocky Mountains, however only twenty percent of this water is returned to the rivers. The WPP temperatures have increased by 4 degrees since 1970 (Schindler, 2006. Most of the rural areas are not receiving 14-24% of their previous annual precipitation in the 1900’s. The summer flows have decreased 20-84% due to the increased warming through its effects on evapotranspiration and evaporation (Schindler, 2001). Low water flows can cause an escalation of water retention that results in increased nutrient retention, thus proliferating Eutrophication....   [tags: Environment, Drinking Water, Pollution] 1638 words
(4.7 pages)
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Water Crisis Solution - ... The first step is worldwide awareness of the water crisis: governments and the citizens they govern worldwide need to know about this problem and be actively involved in solving this problem. One of the best ways to solve this problem would be for these cities or countries to embark on water-saving programs that would drastically reduce water consumption to sustainable levels. Instead of increasing the supply of water to meet demand, a more viable method of addressing the water crisis is to manage consumption....   [tags: Environment ] 1481 words
(4.2 pages)
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How Acid Rain Affects the Aquatic Ecosystem - How Acid Rain Affects the Aquatic Ecosystem Abstract This paper shows that acid rain is a reality. It is destroying our freshwater ecosystems and must be stopped in order to save them. If the problem is not fixed soon the aquatic ecosystems will be destroyed. Table of Contents 1. What is acid rain. 2. Acidification of Freshwater 3. Effects of Freshwater Acidification 4. Where is Affected the most. 5. What is being done to fix it. 6. Conclusion 7. References What is acid rain. Acid rain is polluted rain, snow, or fog....   [tags: Geology]
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1383 words
(4 pages)
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Climatic Change And Its Effect On Society - Climatic Change and Its Effect on Society There has been a significant climatic change that has taken place throughout the years on Earth. These changes have effected society in more than one way. However, there is nothing society can do about the long term influences of climatic changes. Society has tended to address the short term effects of climatic changes that influence the global temperatures within the life span of present generations. The following will show how climatic changes does effect society, health, and economics....   [tags: essays research papers] 856 words
(2.4 pages)
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Explaining Succession - Explaining Succession Introduction Succession is the progression of plant and animal species in an area from smaller simpler organisms to larger more complex organisms, eventually leading to a climax community. The climax community is reached when the species found in the area remain constant over time with few or no species being wiped out or starting to grow- there is an equal balance between births and deaths and gross primary productivity is the same as total respiration....   [tags: Papers] 874 words
(2.5 pages)
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Analysis of Article Discussing Water Depletion - Analysis of Article Discussing Water Depletion The article being discussed was entitled "Tapped Out" and was written by Peter Gleick. It focuses on the depleting supply of our Earth’s freshwater resources. How it effects the human population, and how the problem will develop in years to come. The question being asked is will we be able to sustain enough freshwater to satisfy all the world’s needs. And what will we do about the present lack of clean freshwater in many underdeveloped countries all around the world....   [tags: Papers] 842 words
(2.4 pages)
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Water Conservation - ... If America starts a clean energy industry it will make “jobs, driving innovation and enhancing national security” (House Energy…Commission Budgets 1). This will get the economy growing and people will be aware of the problem. America needs to change how we produce clean water. According to Ron Hall in “Understanding Water’s Worth”, he states that humans have realized that we need to start preserving water quality and conserving our freshwater resources. Why it is crucial is because we have also realized that our freshwater resources are irreplaceable and society’s economy really relies on these resources....   [tags: Conservation ]
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2524 words
(7.2 pages)
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Osmosis and Diffusion Investigation - Osmosis and Diffusion Investigation Aim: To examine the process of osmosis and diffusion. Part A: Step 1: Q1.[IMAGE] Q2. The jiggling motion is visible because the fat globules are constantly being bombarded by smaller particles. [IMAGE] Q3. The Brownian motion is the ‘jiggling’ motion of the milk fat globules. All matter is in constant motion. Step 2: Q4. a) After 5 minutes Clear uncoloured water Cloud of purple stain * Potassium Permanganate [IMAGE][IMAGE][IMAGE] b) After 24 hours [IMAGE] Potassium Permanganate [IMAGE][IMAGE] The potassium permanganate will have spread throughout the beaker as the water molecules are constantly moving around....   [tags: Papers] 558 words
(1.6 pages)
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Irrigating Crops With Seawater - Irrigating Crops with Seawater Brown J. Jed, Glenn Edward P., and O’Leary James W. 1998. Irrigating Crops with Seawater. Scientific American. “Irrigating Crops with Seawater'; talks about the global problem of finding enough water and land for the world’s population to survive. An estimated 494.2 million acres of cropland is needed just to feed the tropics and subtropics for the next 30 years. However, only close to 200 million acres are available. Therefore, new sources of water and land are needed to grow crops....   [tags: essays research papers] 869 words
(2.5 pages)
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Overpopulation and the Carrying Capacity of the Earth - Overpopulation and the Carrying Capacity of the Earth As humans start a new millennium, we have close to 4 billion more than we had at the beginning of the last millennium. In the next 50 years we are looking at adding another 3 billion people. Such a rapid increase has placed great strains on the Earth and leads us to ask – how many people can the earth support. The answer is rather obscure, however it seems like we are approaching our limit rather soon. With decreasing aquifers, shortages in food, and increasing pollution, the Earth has reached its limit....   [tags: Papers] 990 words
(2.8 pages)
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Acid Rain: Its Effects on Aquatic Environments - Acid Rain: Its Effects on Aquatic Environments What is Acid Rain?: Acid rain is rain, snow or fog that is polluted by acid in the atmosphere and damages the environment. Two common air pollutants acidify rain: sulfur dioxide (SO2) and nitrogen oxide (NOx). When these substances are released into the atmosphere they are transformed into sulfuric acid (H2SO4) and nitric acid (HNO3) and can be carried over long distances by prevailing winds and return to earth as acidic rain, snow, fog or dust. When the environment cannot neutralize the acid being deposited, damage occurs....   [tags: Geology] 1056 words
(3 pages)
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Conserving Natural Resources: Should North Carolina Use Gray Water? - As Earth’s population increases, there is also an increasing demand put on many of our natural resources, including freshwater, which is vital for all life on earth. Since a strain is being placed on this essential resource, efforts should be made to conserve it. The use of recycled grey water for irrigation and other needs is one way to conserve. Grey water is any non-industrial wastewater generated from domestic processes such as laundry, bathing, or cleaning that is treated for reuse. Inexpensive systems can be installed to recycle water by either purifying and filtering or diverting it into the ground to water plants....   [tags: Conservation, Natural Resources, gray water, North]
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1036 words
(3 pages)
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Water Shortage - ... (P. Rogers, 2008) Beth Wade (2000) reports that because of weather changes and growing urban population problem, which earlier concerned only countryside, now shifted into the cities. In support of this data she cites words of Don Wilhite, director of NDMC, who says that our society “is moving rapidly into urban areas, and, as a result, we’re experiencing more and more water shortage problems”. As already mentioned, another problem, which has considerable influence on this situation, is climate change....   [tags: Water Crisis, Fresh Water, Climate Change] 1148 words
(3.3 pages)
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Microbes in the Antarctic Continent - ... The similarity of the microbial diversity indicates that the surface currents and the katabolic winds may drive an intermixing of microbes within the freshwater lakes in Schirmacher Oasis. Interestingly, the Verrucomicrobia formed its own clade in the phylogenetic tree when culture-independent 16S rRNA gene sequence was analyzed (Figure 2). This could be due to the diversed characteristics shared by members of this genus which is similar to organisms from both the Domain Archaea and Domain Eukaryota....   [tags: Biology, Microorganism] 2251 words
(6.4 pages)
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The Effects of Mono Lake's Hydrology on its Ecosystem - The Effects of Mono Lake's Hydrology on its Ecosystem Situated at the foothills of the Eastern Sierra Nevada, Mono Lake has an unusual and unique hydrology that is highly influential in shaping the water chemistry (specifically the water's salinity and alkalinity) and biological life that survives there. Mono Lake is a hypersaline, highly alkaline, hydrographically closed basin in which the only natural means of water export is through evaporation. The basin itself was carved out by faulting of tectonic plates that occurred atleast 500,000 years ago....   [tags: Environment Biology Essays]
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2788 words
(8 pages)
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The Problems of Over Population - The Problems of Over Population There are several problems that affect the world today: war, crime, pollution, and several others. Overpopulation is a serious dilemma that is growing every year, every minute, and every second. It is the root of most, if not all, of the world’s problems1. It is the greatest global crisis facing humanity in the twenty-first century. Overpopulation is the major global problem because of several reasons. Most of the problems we have today, such as ocean depletion, food shortages, water shortages, air pollution, water pollution, and global warming are the effects of overpopulation2....   [tags: Natural Resources Economy Essays] 879 words
(2.5 pages)
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About Water - About Water Water is the common name applied to the liquid state of the hydrogen-oxygen compound H2O. In 1804, the French chemist Joseph Louis Gay-Lussac and the German naturalist Alexander von Humboldt demonstrated that water consists of two volumes of hydrogen to one of oxygen, as it is shown in the present-day formula H2O. · Properties Pure water is an odorless, tasteless liquid. It has a bluish color, which may be detected, however, only in layers of considerable depth....   [tags: Papers] 1107 words
(3.2 pages)
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Water and Marine Resources - Water and Marine Resources Introduction Water is one of the most important inorganic compounds in the world, playing vital physical, biological and chemical roles. For many governments the main challenge for the twenty-first century is how to ensure a reliable supply of good- quality, fresh water. This chapter is divided into two sections. The first concentrates on fresh water, whilst the second deals with salt water. Such a division is convenient from a human viewpoint but is of no relevance from an environmental viewpoint because the different states in which water exists are not restricted by salt and fresh water definitions....   [tags: Papers] 5859 words
(16.7 pages)
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Reproduction and Early Life History of the Sculpin Fish - Reproduction and Early Life History of the Sculpin Fish Have you ever personally thought that fish were an interesting subject. Most people don't. The majority of individuals consider fish ordinary, routine and insignificant. However with a closer look, you may discover that fish can be extraordinary and extremely significant in more ways than one. With proper education and better understanding, people will not only realize the importance of the fish, but also the relevance of issues such as the spawning, life history and life span of fish such as Jordania zonope (sculpins)....   [tags: Papers] 1714 words
(4.9 pages)
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Physics of Sea Ice - Sea ice is frozen sea water. Salt ions in the water complicate the growth of ice crystals, and makes sea ice much more dynamic than freshwater ice. Sea ice covers nearly 7% of the Earth's surface, has a huge effect on global climate, and is one of the largest, single biomes on Earth. Ice is the solid, crystalline form of water, which solidifies at 0ºC. Roughly 9 polymorphs of ice are defined, only one, however, occurs naturally on Earth. This common form of ice is known as ice 1h, and its lattice displays six-fold rotational symmetry....   [tags: physice ice sea] 872 words
(2.5 pages)
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Rescuing the Everglades - Rescuing the Everglades INTRODUCTION The Everglades, commonly referred to as the "River of Grass," is the largest remaining sub-tropical wilderness in the lower 48 states. It contains both fresh and saltwater areas, open Everglades prairies, pine rocklands, tropical hardwood forests, offshore coral reefs, and mangrove forests. The broad spectrum of wildlife living in the Everglades includes aquatic birds, mammals, reptiles, and amphibians, of which fifty-six species are endangered or threatened....   [tags: Geology] 1701 words
(4.9 pages)
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Major Environmental Issues Facing Zimbabwe - Major Environmental Issues facing Zimbabwe Zimbabwe is the second most industrialized country in SADC, after South Africa. Industries are concentrated around Harare, with ore smelters located close to the ore sources (principally along the Great Dyke). A combination of vehicle emissions, dust and smoke from domestic fires is a potential air quality concern in larger cities such as Harare. Water is not generally abundant, and the maintenance of water quality is a serious issue. Biodiversity preservation Zimbabwe has a rich biotic heritage and is highly dependent on tourism....   [tags: Global Warming Climate Change] 1719 words
(4.9 pages)
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Two Ways That The Earth's Waters Become Polluted - It is extremely important to know exactly how water pollution occurs to know how it is affecting our lives as well as nature and animals. First off, there are two different ways that the earth’s water becomes polluted (“Water Pollution Causes”). The first category is Point source. This happens when harmful contaminants are directly emitted into a body of water. This is usually regulated and monitored. The second category, Non-point source pollution, is much harder to monitor. This contamination occurs when pollutants are emitted into our water from transport and environmental changes....   [tags: Environment, Water Pollution, Environmental] 1161 words
(3.3 pages)
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We Can Stop Global Warming - ... The more trees are cut, the less oxygen is released, and the amount of oxygen and carbon dioxide are not balanced. In figure F-2 in Appendix A, it shows that industrial processes, power stations, waste disposal, land use and biomass burning, residential commercials, and agricultural byproducts are also causes of the emissions of greenhouse gases. There is a 72% of carbon dioxide, 18% of methane, and 9% of nitrous oxide out in the atmosphere that together is killing the “blanket” of protection of the earth....   [tags: Climate Change, Argumentative Essay]
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1748 words
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Saltwater Irrigation - ... He points out that Rockland County, bordered by the Hudson and the Ramapo Rivers, had declared 3 drought emergencies between 1995 and 2002 (82). New England, an area that is rich in water, is experiencing lower streamflow as the result of groundwater pumping (83). Water shortages have caused the government to either postpone or reject permits for housing and power plants projects. Glennon points out that in some states, governments even require the transfer of current water rights in order to grant permission for projects (304)....   [tags: Environment, Water Scarcity, Seawater ] 2153 words
(6.2 pages)
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The effect of anthropogenic ecological stressors - ... The individuals that were dispersed included copepods, cladocerans, and rotifers; however some of these individuals were already present in the local community. In order to sample to zooplankton, 10 L of the water was collected from each mesocosm, and the zooplankton samples were counted under a dissecting microscope. The biomass was measured by measuring the length-volume ratio of 10 randomly selected individuals of the samples. A total of 16 taxa were present in the treatment, and all of them were able to colonize in the mesocosms except for two taxa....   [tags: Environmental Issues]
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1942 words
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Water Shortage in the Middle East - ... But there are few problems connected with leading treatment into usage. One of them are health and environmental risks (Baroudy 2005, 25-35). Purified in such way water contains bacteria, viruses and parasites (Middle East Water Shortage). Use of treated water can cause different infectious and gastrointestinal diseases. According to Baroudy even contact with this water sometimes can cause allergies and other dermatological illnesses (2005, 25-35). Another problem is that this water has some biological and chemical matter dissolved in it, which can obstruct soil pores....   [tags: Environmental Science Ecology]
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1270 words
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Future of Svalbard - Recently, a lot of focus has been drawn towards glaciers, and how they may change due to global warming, and in turn, affect the rest of the world around it. Svalbard is one such place with many glaciers, in fact it is comprised of about two-thirds glacial landmass. With such a high amount of land covered by glaciers, and with the ever-increasing risk of global warming, how would Svalbard change with the combination of these and many other factors. Although the rest of the world is worried that with global rising, temperatures will continue to get hotter, Svalbard is likely to suffer exactly the opposite fate....   [tags: essays research papers] 659 words
(1.9 pages)
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RFLPs OF THE MITOCHONDRIAL GENE COI: A STRATEGY TO IDENTIFY SPECIMENS OF HAWKSBILL TURTLES Eretmochelys imbricata (Cheloniidae - ... The amplified fragments were analyzed by RFLP using the restriction enzyme AluI. Then compared in silico with the COI gene of Chelonia mydas and other species of freshwater turtles (GenBank). Were obtained COI gene sequences for each individual studied and analyzed by BLAST to identify genus and species. Results DNA was obtained in good quality and concentration (50 ng/ul), being optimal for use in PCR reactions. Were amplified 12 fragments between 700-835 bp (Figure 4), corresponding to the COI mitochondrial gene....   [tags: Ecology]
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Kakadu National Park - KNP Kakadu was declared a national park on 5 April 1979, and also granted world heritage status in 1979. Kakadu National Park is a magnificent part of Australia, and contains many beautiful features. The name ‘kakadu’ comes from the land’s traditional aboriginal owners, the Gagudju people. They have interacted with Kakadu for over 50 000 years, one of the longest periods of interaction found anywhere on earth. The Aboriginal rock art is of particular significance as it provides us an insight of the Gagadju people’s lives for over 50 000 years....   [tags: Australia] 353 words
(1 pages)
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Mono Lake - Mono Lake 1. Mono Lake Mono Lake is a unique body of water lying in the Eastern Sierra Nevadas. For decades its water sources were tapped by the Los Angeles Department of Water and Power (DWP) to use for farming because the lake's high elevation would allow them to easily transport the water to the city and because the water was so saline, people believed it was worthless. The normal traits by which people judge lakes were lacking in Mono: fish could not survive in the salty water, the water was harsh to swim in because of the chemicals and salinity, the scenery was unlike other lakes because there were no trees....   [tags: Biology Science Papers]
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Mangroves in Australia - Mangroves in Australia The mangrove communities of Australia are some of the most highly adaptive plant communities in the world. These plants live in an environment that is often engulfed with seawater. This environment is considered an arid environment due to the lack of fresh water. The plants of the mangrove community must develop several adaptations to deal with the environment. The environment these plants often inhabit is referred to as an intertidal zone. The intertidal zone is the transition between the salty ocean to the fresh water of the interior of the continent or island....   [tags: Plants Botany Essays] 3398 words
(9.7 pages)
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Maintaining Marine Reef Aquarium - Maintaining Marine Reef Aquarium Important Aspects in Maintaining a Marine Reef Aquarium There is something fascinating and relaxing in having an aquarium in a home. Like a fireplace’s warm glow and bright colors, the colors that are emitted from an aquarium can be just as warm and even more colorful. From the slow and graceful movement of the fish to the frantic feeding frenzy, an aquarium is different each time it is viewed. Although a freshwater tank can be full or color, it does not come close to the fiery colors that are present in a marine aquarium....   [tags: essays papers]
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Saving the Ballona Wetlands - Saving the Ballona Wetlands Before development exploded in California, the state contained about 5 million acres of wetland habitat. Unfortunately, over the years California has been willing to part with 91 percent of its wetlands, Southern California having lost 95 percent. Los Angeles County has only one wetland remaining. This being the Ballona Wetlands located between Marina del Rey and the Westchester bluffs, it was once a major part of California’s natural wetland systems. Before development, Ballona wetlands natural habitat covered 2002 acres....   [tags: California Nature Environmental Essays]
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Bleaching away the beauty of coral reefs - Bleaching Away the Beauty of Coral Reefs Pretend you are about to go scuba diving in the ocean. You jump in the water and begin to sink down. As you start surveying the coral reefs around you, something catches your eye. The coral has turned white, and no longer moves with life. This whiteness seems to have spread over a large area of the reef. You no longer see the colorful branches swaying in the current, or the schools of tropical fish swimming through the leaves. This death-ridden reef will never have the same life it once had....   [tags: essays research papers fc]
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Desertification - The world’s drylands, contrary to popular misconceptions of being barren unproductive land, contain some of the most valuable and vital ecosystems on the planet. These dryland environments have surprising diversity and resiliency, supporting over two billion people, approximately thirty-five percent of the global population (UNEP, 2003). In fact, approximately seventy percent of Africans depend directly on drylands for their daily livelihood (UNEP, 2003). However, these precious and crucial areas are at a crossroad, endangered and threatened by the devastating process of desertification....   [tags: essays research papers fc]
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3330 words
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Mans Effect On The Environment - Man’s Effect on the Environment 1) SOURCES OF POLLUTION Freshwater Environments : Man pollutes freshwater all over the world in many ways there is much waste and pollution that ends up in rivers. One of the main hazards is called eutrophication, this process becomes enriched with artificial nutrients from fertilisers which run off into the rivers and upset the natural nutrient cycle of the river, lake or pond. The water turns green because of the algae which when they die multifly using up all the oxygen....   [tags: essays research papers] 2098 words
(6 pages)
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Ocean - Oceans Disciplines: Science (Earth’s physical characteristics), Social Studies (Physical environments), English (Research), Math (Add or subtract using decimals and percents) Grade Level: 4th Grade Duration: Three weeks Description: An urban school setting consisting of mostly minority students in a general education classroom. Brainstorming Cognitive Map: (See attached paper) Content Overview: The Ocean is the great body of water that covers 71 per cent of the earth’s surface. It is also referred to as the sea....   [tags: essays research papers] 1065 words
(3 pages)
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Salmon - The upriver salmon migration is one of nature's most exciting dramas. But to the five species of Pacific salmon (Chinook , chum, coho, pink, and sockeye), it is a long, strenuous, desperate race against time, with every obstacle taking its toll. Pacific salmon belong to a group called anadromous fish that includes Atlantic salmon, sturgeon, lampreys, shad, herring, sea- run cutthroat trout, and steelhead trout. These species hatch and live the first part of their lives in fresh water, then migrate to the ocean to spend their adult lives, which may be as short as 6 months or as long as 7 years....   [tags: essays research papers] 1315 words
(3.8 pages)
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The Republic Of Colombia - The Republic of Colombia is the fourth largest country in South America. It is located at the north-western tip of the continent. Its neighbors are Brazil and Venezuela to the east, Panama to the north-west, and Ecuador and Peru to the south. Colombia is the only South American country that's coast is on the Pacific Ocean and the Caribbean Sea. There are eight islands under Colombian rule, and they are San Andres, Providencia, San Bernado, Islas del Rosario, Isla Fuerte, Gorgona, Gorgonilla, and Malpelo....   [tags: essays research papers] 1698 words
(4.9 pages)
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Thomas Malthuss overpopulation theory - A little over two hundred years ago a man by the name of Thomas Malthus wrote a document entitled “An Essay on the Principle of Population” which essentially stated that there is an imbalance between our ability to produce food and our ability to produce children. He said human beings are far better at making babies than they are at finding food for survival. His entire essay is based on these two assumptions. “ First, That food is necessary to the existence of man. And second, that the passion between the sexes is necessary and will remain nearly in its present state.” When taking into account what is said in this essay, it is obvious that his original analysis of population has been proven right....   [tags: essays research papers] 1168 words
(3.3 pages)
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The Effects of Pollution on Water - It is widely known that water covers almost three-quarters of the Earth's surface. However, the large amounts of pollutants that fill our waterways each year are largely unknown. Water pollution comes from a number of unique sources, such as industrial waste, urban stormwater, agricultural runoff, various household chemicals and even nuclear waste. Combining these points of pollution with the increase in global population results in a continuously decreasing amount of clean water for plant and animal life on Earth and an increasing amount of polluted water....   [tags: Environmental, Environment] 617 words
(1.8 pages)
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The Effect of Pollution on the Distribution of Organisms Along the River Roding System - The Effect of Pollution on the Distribution of Organisms Along the River Roding System Method Equipment Pond net Tray Pots and lids Spoons Hand lens Wellington boots Specimen Pots Freshwater Invertebrate Key Scrap Paper (note pad) Gloves Tape to cover cuts Pencil I investigated how the quality, amount of dissolved oxygen, nitrates, phosphates and the temperature of the water in the River Roding System affected the distribution of organisms in the river....   [tags: Papers] 2198 words
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The Everglades - The Everglades On May 30, 1934, an Act was passed, which authorized a park to be created through public donations. Thirteen years later, through a combination of private, state and federal lands, an expansive wetland was hopefully immortalized as a national park. Everglades was the first national park that was preserved primarily for its biota, in lieu of scenic or historic values. Shortly after moving to Miami in 1925, Ernest F. Coe, made the Everglades Park project his life work....   [tags: Papers] 782 words
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Summer Camp - Original Writing - Summer Camp - Original Writing It couldn't be happening again, the second attack in a month, each one with more aggression than the last. The surfers and swimmers were the target as they thrashed about in the water undistinguishable from seals. It was suicidal to be in these waters in the middle of summer during feeding time, but the swimmers and surfers didn't know, how should they know the sharks were hungry. The coast guard hadn't warned people to stay out of the water, no, they didn't care, as long as they were getting paid, they didn't care....   [tags: Papers] 735 words
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History and Future of Wyoming’s Droughts - History and Future of Wyoming’s Droughts The Great Basin of North America and Wyoming specifically, is known for its arid and semi-arid environment, as well as prolonged and sometimes severe droughts. Drought is the prolonged and abnormal deficiency of moisture with the concomitant decline in runoff to a level significantly lower than usual (Guldin 1989). The history of droughts in Wyoming has been uncertain in the past, but recent studies of tree rings in the Big Horn Basin of Wyoming have given insight to droughts as far back as 1260A.D....   [tags: Wyoming Weather Drought Essays Papers]
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Rising Sea Levels - Rising Sea Levels In a world divided by war, it is easy to overlook problems that affect all of mankind. The dramatic rise in ocean levels worldwide constitutes just that sort of problem. Although the fundamental problem of global warming has been given airtime and plenty of written-media coverage, the problem of rising sea levels seems to have met a certain amount of apathy. A likely explanation is that the rising sea levels mainly threatens impoverished peoples that may have no choice but to doubt the threat, since there is no way for them to relocate....   [tags: Global Warming Environment Ecology Climate Change]
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Techsonic - INTRODUCTION After several new product failures, the company began using customer input to help develop new products. In 1989, the fishing electronics industry is experiencing a downturn, and the company's sales and profits are slipping. The company, which has one product line (depth sounders) and a strong brand (Hummingbird), has conducted substantial market research on three new products. These products are project 901, hummingbird VHF Radio, Locator/ GPS navigator. Of these, project 901 is an extension of the depth sounder product, while the other two would be new product lines for the company....   [tags: Business Management Strategy Analysis] 1664 words
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The Properties of Seawater - ... Major solids in ocean water usually come in two forms: chloride and halogen ions. Common chloride ions dissolved in ocean water include sodium chloride, calcium chloride, potassium chloride, and magnesium chloride. Common halogen ions dissolved in seawater include sodium fluoride and potassium iodide. The measure of the total mass of halogen ions in seawater is called chlorinity. The average chlorinity in seawater is about 19.2% which is equal to 34.7% seawater salinity. There are also substances that are not accounted for when measuring the salinity of ocean water....   [tags: Chemistry]
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Challenges, Success, and the Future of Conservation at the SCB 2009 Annual Meeting in Beijing - ... Renowned scientists Dr. George Schaller and Dr. Joel Berger were on hand to receive SCB awards. Schaller, who was recently the subject of the film “Nature's Greatest Defender,” shown on the National Geographic channel, was recipient of a Distinguished Service Award, selected “for extraordinary contributions to the conservation of many of the world's most iconic and endangered species through leadership in field research and applied conservation.” Berger was awarded the prestigious Edward T....   [tags: Meeting Minutes] 831 words
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My Window on The World - ... The other day I went to our local home improvement store to purchase some chemicals to put on our yard. I calculated in my mind (bad move) the total cost to be around $90, but upon checking out the bill, minus a 10% senior discount, came to $65. I knew my conscience was still asleep, so I was very careful not to awaken it. I paid the bill, headed for the truck with my purchases, and regrettably, had a very large smile on my face (sorta like the cat that ate the canary). Here’s the dilemma, am I only responsible for insuring I’m not overcharged and is it their responsibility to insure they are paid correctly....   [tags: Personal Experience] 1445 words
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The Genesee River Watershed - ... Several birds breed in the GRW at Bergen Swamp, which is a habitat that is rare nationally, and nowhere else in the Lake Ontario Plain (GFLRPC, 2004). The Winter Wren along with four species of Warbler, Hermit Thrush, Blue-headed Vireo, Yellow-bellied Sapsucker, Purple Finch, and the Alder Flycatcher are all species that are found in Bergen Swamp. There are also five breeding owl species in the swamp they are the Great Horned, Screech, Barred, Saw-whet, and the Long-eared owls. Other animals also use the GRW as their habitat....   [tags: Ecology ] 1989 words
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Water Quality of Mexico City - ... With the beginning of urbanization Mexico City sank over nine meters, and still has not stopped its descending trend (Alcocer and Williams, 1996). In 1803 it was recoded that Lake Texcoco was slightly more than one meter below Mexico City, as opposed to more recent measures which show that Lake Texcoco is now three and a half meters higher the city (Alcocer and Williams, 1996). It is clear that the lack of underground saturation is causing problems to the sustainability of Mexico City and will continue to, unless the situation is addressed and solutions are attempted....   [tags: Environment, Water Pollution]
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Striped Bass of New York State - ... During the springtime, mature striped bass swim up to the headwaters of the Hudson River to spawn. The embryos float downriver until hatching some days after they were spawned. The striped bass larvae proceed to float downstream until they arrive at the estuaries, moving toward regions such as Haverstraw Bay to the Tappan Zee Bridge. These areas function as nurseries for the larvae and immature fish throughout the summer. By late summertime and into fall, these young fish move into the estuaries of New York Harbor and western Long Island bays, where they'll live until they are big enough to join the adults off the coast....   [tags: Animal Behavior ] 933 words
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Save the Rainforest! - ... We need to limit our consumption of plastics and make sure that they are disposed of in their proper places. Scientists have begun to say that we have to do more to protect our ecosystem, because our very existence is depending upon it. When the ecosystem is not functioning properly the continuation of plant, animal and human life ecosystems would be impossible. Life cycles can not function without ecosystems. The ecosystem provides us with clean air, water, habitats for fish and other services....   [tags: Ecology ] 995 words
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Breeding Habits of Water Birds - ... The nesting colonies of these birds that represent spatial and temporal clumping of nests are popularly referred to as Heronries. Colonial waterbirds face significant threats to the long-term stability of their populations and habitats due to such impacts as the destruction of freshwater wetlands, destruction and degradation of coastal ecosystems, depletion of the forage base in freshwater, coastal, and marine ecosystems, contaminants, sea level rise, and various conflicts with human land and resource use....   [tags: Biology ] 976 words
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Does Religion belong in Public Schools? - ... Even with the growth of support for the teaching of religions and prayer in public schools, the majority of researchers believe that it is necessary to follow the constitution and strictly separate church from state. There are many scholars who agree with this statement. In an opposing viewpoints article found in the New York Times, there is a story of a small town in Ohio where a teacher carried a Bible with him in his classroom and was “accused of burning a cross onto the arms of at least two students” (Urbina 1)....   [tags: Religion]
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Critical Reflection on Dialogues - ... In dialogue 2, I had an opportunity to communicate with my patient’s wife. Prior to making decision on ambulation, the patient and his wife had opposite opinions from different perspectives. Parse (1981) stated that it was impossible for two persons had precisely same feelings and experiences in a family. Based on Parse’s theory, nurses need to bear witness to the interaction between patients and their families rather than disturbing the rhythms and patterns of the families (Cody, 2000). However, I did not follow the rhythm of my patient’s family after I noticed the conflict between my patient and his wife....   [tags: Nursing ]
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Acid Rain 8 - Acid Rain is a type of air pollution, which is formed when oxides of sulfur and nitrogen combine with atmospheric moisture to yield sulfuric and nitric acids, which may then be carried long distances from a source before they are deposited by rain. This pollution may also take the form of snow, fog, or a dry form of precipitation. Acid rain is currently a subject of great controversy because of widespread environmental damage, for which it has been blamed, including eroding structures, injuring crops and forests, and threatening or depleting life in freshwater lakes....   [tags: essays research papers] 427 words
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Manatees - Manatee, common name for each of three species of a large water mammal, popularly called a sea cow because it grazes on marine grasses and other water plants. The Amazonian manatee ranges throughout the Amazon River basin in South America; the West African manatee occurs in rivers and coastal waters of tropical West Africa; and the West Indian, or Caribbean, manatee is found in rivers and coastal waters from the southeastern United States and the Gulf of Mexico to the Caribbean Sea and northeastern Brazil....   [tags: essays research papers] 424 words
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Piranhas - Anyone can keep fishes , no matter how small their home , and they are particularly suitable for apartment-dwellers , especially those in highrise blocks where the keeping of other pets may be impractical or even prohibited . There are other advantages too ; Fish won't need exercising , They do not disturb your home with messy fur or feathers , They can not escape like other pet reptiles , They can not make noises . All you need is a space to put your aquarium . Aquariums require a few minutes of your attention daily ....   [tags: essays research papers] 394 words
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The beach - Review from Los Angeles Times Book Review, 02/02/1997: "[A]rresting though no masterpiece....Garland's message is complex and acute. The self-indulgence of a generation of young Westerners--seeking isolated and well-funded paradises and ignoring the miseries and needs around them--can itself breed monsters. There is more than one kind of Vietnam....The reader's suspense in this intelligently conceived and often effective novel, may consist more in wondering what the author will do than in what his characters will do." -- Richard Eder Review from Times Literary Supplement, 10/18/96: "This exceptional first novel by...Alex Garland creates a picture of an ideal society gone awry through the heady conjunction of a secret beach on an island in southeast Asia and a cultural breadth of reference determined by pop songs, the Vietnam War, and Nintendo Gameboys." -- Giles Foden First Line: Vietnam, me love you long time....   [tags: essays research papers] 390 words
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The Evil Soul Revealed in Joseph Conrad's Heart of Darkness - Heart of Darkness:   Evil Soul Revealed         In Joseph Conrad's Heart of Darkness, there is a great interpretation of the feelings of the characters and uncertainties of the Congo. This intricate story reveals much symbolism due to Conrad's theme based on the lies and good and evil, which interact together in every man. By probing into the heart of the jungle Conrad was trying to convey an impression about the heart of man through symbolism of the jungle itself and the manager. The story is written as seen through Marlow's eyes....   [tags: Heart Darkness essays] 683 words
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California Wetlands and The Batiquitos Lagoon - California Wetlands and The Batiquitos Lagoon As the importance of wetland property has been brought to light by ecologists it is a wonder why so much of it is still being destroyed. In California there are development trade- off's that are made that will destroy one wetland while saving another. This will be seen using the Batiquitos Lagoon in Carlsbad, California as an example. In 1987 an agreement was signed with the Port of Los Angeles and the state of California. This agreement allowed part of the Port of Los Angeles to be filled in for commercial development, if the Batiquitos Lagoon was restored....   [tags: Environment Ecology Ecological Essays] 767 words
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Aquaria In Relation To Science - The hobby of fish keeping is much more difficult than it seems. It is also directly dependant on science. The bacterial cycle is one aspect related to science. As is how different filters work. Water conditions such as temperature, ph, and salinity play a big role in successful fish keeping as well. Science and Fish keeping go hand in hand. When a tank is first started fish waste and excess food begins to decompose at the bottom. One type of bacteria breaks it down to ammonia, which is highly poisonous to fish....   [tags: essays research papers] 533 words
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Harappa - The Indus Valley civilization flourished around the year 2500B.C., in the western part of southern Asia, in what is now Pakistan and western India. In addition it is referred to as the Harappan Civilization after the first city that was discovered, Harappa. Eventually, the Harappan Civilization completely vanished around 1500B.C. Men and women used to wear colorful robes. Women wore lots of jewelry and even lipstick. In addition women would wear bracelets like the ones that are worn today in present day India....   [tags: essays research papers] 504 words
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Quebec, The Province, The People, The History - Quebec, The Province, The People, The History Quebec is a province in eastern Canada, bordered on the north by Hudson Strait and Ungava Bay; on the east by Labrador (Which is a part of Newfoundland), the Strait of Belle Isle, and the Gulf of Saint Lawrence; on the south by New Brunswick, Maine, New Hampshire, Vermont, New York, and Ontario; and on the west by Ontario, James Bay, and Hudson Bay. The name Quebec is derived from an Algonquian term for "place where the river narrows," referring to the Saint Lawrence River near the site of present- day Quebec City, the capital of the province....   [tags: essays research papers] 572 words
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Salt Marshes - Oceanography Salt Marshes Salt marshes are coastal wetlands rich in marine life, which are covered by water at least once per month. They are found in the intertidal zones along low-energy coastlines, forming along the margins of estuaries, where freshwater from the land mixes with seawater. These marshes can be found near the Great South Bay and the Long Island Sound. The entire south shore of Long Island is considered to be a salt marsh important to the health of the marine life....   [tags: essays research papers] 617 words
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Tornado - Tornado When a tornado forms or passes over a water surface, it is termed a waterspout. Like tornadoes, they may assume many shapes and often occur in series or families. Measurements of their forward speeds are scarce, but estimates vary from a few kilometers an hour to as high as 64 to 80 kilometers per hour. Contrary to popular opinion, a waterspout does not "suck up" water to great heights; though it may lift the water level a few meters. The main visible cloud consists mostly of freshwater clouds produced by condensation of water vapor; however, a sheath of spray often rotates around the lower portion of the vortex tube....   [tags: Papers] 467 words
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The Round Goby as a Non-Native Species in the Great Lakes Eco Ssytem - The Round Goby as a Non-Native Species in the Great Lakes Eco Ssytem As if there weren’t enough problems for scientists trying to save the Great Lakes Eco System. Many non-native species have entered the eco system and many of them are harmful. Every species in itself has played a role in the eco system. These non-native species make it increasingly difficult for the Great Lakes Eco System to be regulated. One species in particular, the Round Goby (Neogobious Melanostomus), is particularly harmful....   [tags: Papers] 381 words
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Heart of Darkness by Joseph Conrad - Heart of Darkness by Joseph Conrad Joseph Conrad's Heart of Darkness presents two main themes, which are relevant to the story. The first of which is imperialism and the second is racism. This novel takes place in the late 1800's on the Congo River in Africa, which Conrad uses to help illustrate these two themes. Charlie Marlow, the main character, is a sea captain whose exploration leads him to Africa on a freshwater navigation. Marlow's journey from the continent of Europe to the continent of Africa was quite a difference....   [tags: Papers] 472 words
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