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Role of water in living organism pdf
Role of water in living organism pdf
Role of water in living organism pdf
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As we all know water is one of the essential elements for our life, and almost if not all living creatures need it for various usages, Moreover, Water is found ubiquitous on earth about 70% of earth covered by it. The chemical composition of water is one atom of hydrogen and two atoms of oxygen that make molecule which can be presented as solid, liquid, and gas. Also it has a diverse properties, such as dissolvent, different materials can be dissolved in water, and it takes place in several chemical reactions. Due to the importance of water to the life form we are obligated to pay attention to the water cycle in nature and understand our impact in that cycle.
As any other biochemical cycle, the water cycle start with the energy released from the sun lights, then the water from the ocean and any earth surface evaporate to the atmosphere. Considering the temperature of the atmosphere the molecules of water change to be closer and condense to form clouds eventually the perception commence, Then the water go back to the earth whether to the surface, under ground as reservoirs or to
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For example, If I am going to wash the food products like vegetables, I wash then in a container so that I can water the plants in the garden with that water by this act I save some amount of water and use it for same volume for multiple purpose. If we make more effort, we will mange to reduce the amount of our usage of water without actually reducing the quantity of our life. The only thing we will give up is a bit of time and replacing unwanted act with productive ones. Even though it sounds difficult to do so, I still thing it is manageable considering the huge impact it would leave to our environment and
The hydrologic cycle is how water moves through the natural process of evaporation, condensing as clouds and then falling back to the earth as rain, sleet, snow or fog. The Hydologic Cycle as defined by Lutgens F. and Tarbuck E. (2013), “The unending circulation of Earth’s water supply. The cycle is powered by energy from the sun and is characterized by continuous exchanges of water among the oceans, the atmosphere, the geosphere and the biosphere.” In Napa California the hydrologic cycle is when water enters the system as rainfall and leaves the system as either runoff to the San Francisco Bay or evaporates back into the cycle.
How the Properties of Water are Related to Its Roles in Living Organisms and as a Living Environment for Living Organisms
There are numerous stages that take place simultaneously in the hydrologic cycle and this includes evaporation. This is when the water alters from a liquid state into a gas. The damp air from the water rises into the atmosphere and when it cools, the vapor condenses and shapes into clouds. But those billows are not the only form the vapors make; it can also materialize as dew, fog and mist, which blanket the Earth, characteristically on a rainy or humid day. Evaporation takes place when water changes from a liquid state into a gaseous state, and ascents out of the pores of the earth and into the atmosphere as a vapor (“How”). While evaporation is taking place, condensation is also occurring. When the temperature in the air plunges, the clouds become heavy and as a result they relieve themselves of the extra weight, which is called precipitation. This produces rain, hail, snow and sleet, conditioned upon the temperate. As the precipitation falls, it enters the surface of the ground and percolates into the soil, which is called infiltration. The more porous the land is, the more the infiltration can take place. However, the ground cannot hold all of that water and floods. The excess rainfall, which is also called runoff that has not been absorbed makes its way into bodies of water, such as small ponds, rivers, lakes and parts of the ocean (“Summary”).
of water. Then water is evaporated back up into the sky via soil or water bodies and it is
Water is important for living beings because it is the basic element of the cells that make
The Biological Importance of Water as a Solvent and as a Medium for Living Organisms
The Role of Water in Living Organisms Water is one of the most abundant molecules on planet earth; it is found in vast amounts not only in earthly enviroments (oceans, lakes and rivers), but is also present in the atmosphere, and as solid ice in the two poles. Consequently it is rather logical that water plays an important role in biological life: the origins of life occurred in water and life itself wouldn't be able to continue in it's absence . I will now describe the structure of a water molecule. It consists of an oxygen atom covalently bonded to two other atoms of hydrogen. The two bonds form a 105 degrees angle with eachother, but for the reason that oxygen is more electronegative than hydrogen, the shared electron charge of the covalent bond is distributed more towards this atom, making the water molecule weakly polar.
Water has three stages—liquid, gas and solid. Water on Earth can be liquid as rain, streams, or oceans. It can be a solid like hail, ice or snow. It can be a gas like vapor, steam or clouds. As described by the Department of Atmospheric Sciences (2010), the hydrologic cycle is the process of water changing from liquid to gas to solid. The energy of the sun drives the changes to water. When water is heated up, it evaporates, turning into a gas to form steam or vapor. The water vapor rises with warm air that when meets cooler air, condenses to form clouds. These clouds and water vapor can be transported around the world. Precipitation is when water falls to Earth, in warmer temperatures as liquid and in temperatures, as a solid. On Earth, precipitation can evaporate again or infiltrate the Earth to become groundwater. As ground water it can collect in oceans, rivers or on snowy mountaintops and glaciers. It can also be released back into the atmosphere via transpiration, when water evaporates off soil, trees. When water evaporates, the cycle starts again.
The different properties of water allow it to be labeled as one of the most important substances for life on the earth, and most of it has to do with its chemical structure. Again, water is composed of two hydrogen atoms and one oxygen atom. The arrangement of these atoms is the property that makes water such a good solvent. Rather than being arranged straight across, the two hydrogen atoms are at a 104.5 degree angle, making the molecule appear as a silhouette of a cartoon mouse. This makes one side of the molecule- the oxygen side- able to be negative, while the other side- the hydrogen side- is able to be positive.
As the sustenance for all humankind, animals, plants and other living organisms, Water is the greatest natural resources on this planet and it is becoming scarcer and more of a necessity. Water is a basic need and not a want in the same way that without air to breathe, cannot sustain life. Safe, clean water and good sanitation is a right. Therefore, the right to safe, clean water means the right to life. According to United Nations human rights are rights inherent to all human beings, whatever our nationality, place of residence, sex, ethnic origin, color, religion, language or any other status. Based on UN definition I am confident to assert that safe, clean drinking water and good sanitation is a basic human
Water has a great number of roles in living organisms, this is largely to do with the structure and covalent bonding in a single water molecule, and between water molecules. Around 75% of the earth is covered in water, and it is reffered to as the most important Biochemical. Its chemical symbol is: H2O In a water molecule there are two bonding pairs and two non-bonding pairs of electrons. These four pairs of electrons repel one another, forming a tetrahedral pattern.
Water is the most vital part of life. Water is needed from humans, to plants and other organisms, and to do basically everything. Water allows our bodily functions to work and to remove waste from our bodies. Plants need water to grow, and humans need plants to gr...
Water scarcity is harmful to human life because when water is poorly managed throughout the world, those who need water are deprived of nutrients they truly need, causing them to die. This eventually affects the global population. Therefore, many experts have proposed several solutions such as the LifeSaver Bottle, TrojanUVPhox treatment system, and Waste Water Recycling. The problem of water scarcity has increasingly spread throughout the world as of yet, The UN reports that within the next half- century up to 7 billion people in 60 countries which is more than the whole present population will face water scarcity (Sawin “Water Scarcity could Overwhelm the Next Generation”). As well, the demand for freshwater has tripled over the past 50 years, and is continuing to rise as a result of population growth and economic development.
...ner efficient energy. Also using water efficiently, we can preserve our water and with preserving water we preserve energy that reduces greenhouse gas pollution. We can always refer back to our grade school motto for the environment, which is Reduce, Reuse, and Recycle which is very essential to our environment.
Water covers about seventy one percent of Earth’s surface. Earth is the only planet to have stable bodies of liquid water on its surface which is crucial for all known life forms. Water is a substance which acts as a solvent in which organic compounds can mix, and it is the substance which is thought to be necessary to facilitate the formation of life. There are many forms of water which include ice, liquid, and gas. Because water can exist as a gas, it can be stored in the atmosphere and be delivered as precipitate. Water also helps regulate the climat...