The GHGs simulate a blanket that covers the earth and keep the world warm. This protection is great for the mammals that have adapted and are comfortable being warm. Over the last couples hundred years, humans have seriously increases the level of GHGs of the world by one burning fossil fuels, oil and coal. This has rising the temperature in area the need to stay cold to support the cold weather animals. Other things are also causing the temperature to rise like deforestation. Cutting down an abundance of tree stop them from actually doing one of their jobs, this is soaking up some of the CO2. Trees remove carbon from the air and help clean the atmosphere. With the world warming up to higher temperature then it has ever has in the last 10,000 …show more content…
In 2002 the Ward Hunt Ice Shelf, which has been in the Artic for 3,000 years, split in half. (http://www.brighthub.com). The shelf keep braking into smaller pieces, which also serves as natural home to polar bears. If the shelf continues to break then the polar bears in the artic will eventually won’t have a habitat to live in. This is also affecting the food that they eat. Polar bears usually feed mainly on ringed and bearded seals and whales (http://seaworld.org). That depends on what location that they are in. A polar bear can take in about 20% of its own weight in food. This only occurs when its energy demands are high. What is interesting is that a polar bear needs to have an average of about 4 pounds of fat per day to obtain enough energy to survive (http://seaworld.org) this is why they usually look for ringed seal because they weight about 120 pounds and this could be enough to hold a polar bear for about eight days. Polar bears have an interesting tactic they stalk ringed seals at the birth lairs. The lairs for the ringed seal are in caves under the snow drifts next to a hole in the ice. Once the birth lair is identified the polar bear slowly position itself near it. Once the bear smells or hear a seal in the lair she break through the roof of it and tries to get to the seal. Sometimes this method is not a success because it take a few time to break through the top of the lair. This method is usually done be the female polar bear and most of the time the seal get anyway while the bear is trying to break through the roof (http://seaworld.org). Since the polar bear food is becoming scarce they have to travel outside of their natural habitat to find food. This is unusually for the polar bear to exhibits the sort of behavior. That’s why we are noticing polar bears in places that you wouldn’t normally see them. The journey for the Polar bear to find food is
The Arctic region is home to a variety of valuable animals and plants, including polar bear, seal, and so on. The ecosystem of the Arctic region is fragile because these animals are evolved to live in extreme conditions. With the climate change, many animals are endangered. Ice is the habitat of polar animals because they have to rely on sea ices for resting, food, and reproduction. With the climate change and the decrease of sea ice, the number of polar animals is decreasing and their health is threatened. For example, the average weight of female polar bears in 1980 was about 650 pounds, but the number reduced to about 500 pounds in 2004 (Djoghlaf 15). The earlier breakup and later condensation of sea ice shortens the hunting season of polar bears. Polar bears mainly feed on seals that indwell icy land. The melting ice reduces the number of seals and food intake of polar bears. In addition, polar bears are used to living in ice caves. The rising temperature causes the collapse of ice caves, which can kill baby bears. The climate change is negatively affecting the biodiversity in the region and will definitely harm the ecosystem
The grizzly bear trophy hunt is an issue regarding the citizens of Canada who immorally hunt and kill grizzly bears for pride, thrill, and trophy. Many people question whether this is morally acceptable as hunters kill without a conscience. Grizzly bears are vital to Canada’s environment as they are essential to maintaining a healthy ecosystem. As keystone species, they regulate prey, disperse seeds of plants,and aerate soil to maintaining forest health. Due to the vulnerability and over-hunting of grizzly bears, Pacific Wild and many other non-profit organizations, are working to protect wildlife in British Columbia, especially the grizzly bear habitat.
grizzly bears prefered habitat is deserted rivers, wild mountains, and thick and dense forest. Grizzly bears are majestic symbols of the wild. Bears live in and use a variety of habitat types, playing important roles in each one. This makes them an “umbrella species,” meaning that when we protect them and their habitat we also protect many species. Grizzly bears can also help ecosystems by distributing seeds and nutrients through their scat, and occasionally regulating ungulate populations.
Global warming is an issue we are all pretty familiar with. It is the climate change that we, humans, are responsible for. The warming of the earth’s atmosphere is caused by the fossil fuels we burn, clearing of forests, and the carbon dioxide and other harmful gases we release into the air (Cunningham, Cunningham, 2009). There are other harmful toxins we use such as pesticides that are supporting global warming. Some effects of global warming include: increase in weather catastrophes, melting glaciers, rising sea levels, and the impact on species could lead to extinction (Cunningham, Cunningham, 2009). “Many scientists regard anthropogenic global climate change to be the most i...
Out of an Ice Age emerged one of our most majestic creatures in the world the polar bear. From its brown bear ancestry, the predator evolved to be a master of a harsh and unwelcoming ice kingdom. Intelligent, adaptable and fierce, the polar bear learned how to survive in a place that offers few comforts to any creature. But now that very environment is in flux. And so is the polar bear’s fate (Nature). Polar Bears are very different from other bears. Polar bears are very large bears compared to Black bears. Polar bears weigh anywhere between 330-1700lbs and Black bears weigh anywhere between 150-600lbs. They have strong legs with large, flattened feet with some webbing between their toes that help with walking on ice and swimming. The wide paws prevent sea ice from breaking by distributing weight while walking. Their paws allow them to pull a 600 pound seal out of its breathing hole (Rosing, 20). The webbed feet results in making polar bears, unlike other bear species to be considered as marine mammals along with seals, sea lions, walruses, whales and dolphins (Polar Bear). According to Rosing Polar bears are excellent swimmers and have been known to swim up to six miles an hour and as far as 60 miles at a stretch. The bears paddle with their front feet and steer with their back feet. They often overheat. Sometimes they venture into the waters just to cool off. When a bear climbs on an ice floe, it shakes itself off because it is trying to prevent ice from forming on its fur (22-23). Because of climate change and hunting of polar bears are now becoming an endangered species which is affecting the food chain. We can fix this by going green, banning polar bear hunting and keep creating these new hybrid bears that are mixed with griz...
Global warming has been going on for one to two centuries now. It has affected the earth a lot and not only that , it has also affected the air. Global warming has consequences as stated before , and it usually happens with solar and terrestrial radiation. Even though people believe that all of this is caused by humans. Scientists believe that global warming was going to be caused by sickness or in other words by diseases but it turns out that they were wrong. Not everyone believes that global weather is a bad thing but they just haven’t realized how bad it has affected us. As long as global warming is around the temperatures will keep on rising, animals will keep on decreasing, and the atmosphere will keep on trapping heat. That’s what global warming is all about. It’s all about warming up the atmosphere and affecting those around them.
Hunting Black Bears and Grizzlies could be affecting their population that is already low, but hunting with bait, dogs, different kind of guns and tactics, is negatively affecting how many are killed during a hunting season. The numbers are low there is a chance the bears are outnumbered by hunters and there tactics. The number of hunters privileged with a bear tag should be limited this could negatively or positively affect the populations.
To begin with, the melting of polar ice caps has caused polar bears to swim long distances. According to Bryan Walsh of TIME Magazine the melting of the ice caps have caused polar bears especially the young cubs to swim longer distances which has caused a “ forty-five percent mortality rate” (Walsh). In the article Walsh, writes about a study that showed that younger cubs because of low fat and strength were more likely to die due to the long di...
Global warming and global climate change is the study of future increases of temperature across the globe. Studying climate change refers to how the over- all climate will change such as the dry places getting dryer and the wet places getting wetter. Global climate is dependent on “the greenhouse effect a natural process that helps regulate temperature” (Easterling and Karl). In the past few centuries humans have had a monumental effect on increasing of greenhouse gases in the atmosphere. Climate change is result of the increase amount of the greenhouse gasses in the atmosphere such as methane, carbon dioxide, water vapor, nitrous oxide, and ozone. “Global temperature has rose approximately 1.4 degrees Fahrenheit over
When a person thinks about a national park, they are probably thinking of an eye popping, jaw dropping land of beauty. This is why Gates of the Arctic is a perfect example of what a true national park can be. Gates of the Arctic National Park and Preserve is a U.S. National Park in the heart of Alaska. It is the northernmost national park, which the entirety of the park lies north of the Arctic Circle and is the second largest park at an area of 8,472,506 acres. The park includes most of the central and eastern parts of Brooks Range. The park borders the east by the Trans-Alaska Pipeline, Dalton Highway and the Arctic National Refuge. On the west the Noatak National Preserve and the Kobuk Valley National Park borders the park. The park straddles
The polar bear rarely eats plants. That is why it is considered a carnivore, or meat-eater. The ringed seal is the polar bear's primary prey. A polar bear hunts a seal by waiting quietly for it to emerge from an opening a seal makes in the ice allowing them to breathe or climb out of the water to rest. Polar bears eat only the seal's skin and blubber of the seal. The remaining meat provides a food source for other animals in the Arctic.
Global warming and the greenhouse effect are issues discussed by scientists all the time. A natural process that keeps earths temperature at a livable rate is called the greenhouse effect. The energy from the sun warms up the earth when the rays from the sun are absorbed by greenhouse gasses. The gasses then become trapped in the atmosphere. Carbon dioxide, water vapor, methane and nitrous oxide are the most common greenhouse gasses. Greenhouse gases cause the radiant heat of the sun to be trapped in the Earths lower atmosphere which causes global warming. If there weren’t any greenhouse gasses, the earth would be really cold due to very little sun rays being absorbed on the earth. Global warming can and will lead to several problems that affect the environment in which we humans live in. These problems can lead to warmer temperatures all around the world, it can endanger animals and the wildlife, and it can lead to widespread flooding from the glaciers melting. Here are a few more future effects that I will discuss in more detail about. Damage to human health, Severe stress on forests, wetlands, and other natural habitats, how fish will be affected. Global warming is a serious problem that will affect our generation when we are older.
Global Warming is a condition caused by greenhouse gases and human activities. The increased concentration of greenhouse gases due to activities such as deforestation and fossil fuel burning is causing the Earth’s atmosphere and oceans to warm up. As a result of this, global warming has some serious effects in the shape of extreme weather, species extinctions, and rising sea levels. These effects can contribute to the changes that are taking place all over the world, most of which are dangerous enough to pose a threat to the survival of life on Earth in the future.
If there is an increase in the rate of global warming it will have serval effects on us humans and animals in fact the whole environment will be effected by it for example rise in the sea level which will cause lots of marine animals to die due to their loss in their food source or increase in the greenhouse gas concentration which will Increase Earth's average temperature, Reduce ice and snow cover which will cause the polar animals to die because of the change in temperature, as well as permafrost, Increase the acidity of the oceans which will make the water ph unsuitable for the marine life.
The common definition of global warming is a gradual increase in the overall temperature of the earth’s atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide and other pollutants (Global warming, Wikipedia). Moreover, the effects of global warming will bring ecological and social changes. Because there is no exact way to predict the effects of global warming, it is almost impossible to say how strong global warming will affect life in the future. Scientists blame the greenhouse gas effect in combination with societies greenhouse gas emissions for the rising temperature. The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is emitted back towards the earth’s surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases (Intergovernmental Panel on Climate Change). Simply, global...