The Importance Of Water

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Water is much more than an odorless, tasteless, transparent liquid. We use it every day and it affects every aspect of our lives and our planet. Chemically water is a compound made of two hydrogen atoms and one oxygen atom, but water has many unique properties that make it crucial for life to exist. Water is one of the only substances that can naturally exist in three distinct phases as a liquid, a gas, and a solid. Water is found to dissolve more substances than another other, which is why it is known as the universal solvent. The reason it is a good solvent is because it is a polar molecule which allows water molecules to dissociate compound into their constitution ions. Among the unique qualities of water is the adhesion and cohesion properties that water possess. They contribute to its ability to stick to other substances as well as to itself. Cohesion makes the film appear when you fill you glass above the rim. There is a great tendency for the water molecule to be attracted to itself rather than the glass. The cohesion forces are also seen when small animals are able to walk across water. Adhesion plays a role in the growth of plant life. Tall trees receive water from the ground because water molecules seem to crawl up the center of the tree. This allows the tree to receive water through the entire tree, almost defying gravity. Another unique quality is the high specific heat of water, which allows it to maintain average temperature at all times. Specific heat is the amount of energy need to change the temperature of a substance. Have you ever notice in the summer how hot the sand is, but when you enter the water it is still cold? The reason for this is that water takes a lot of energy to rise it temperature. You have... ... middle of paper ... ...ort bodily waste and regulate the temperature within the body. The cleansing properties also aid in kidney function. Water’s many unique properties make it crucial for life to exist on our planet. The importance of clean water is almost as critical to our planet as water itself. “Just as humans require clean drinking water to maintain our health, animals, plants, fish and other aquatic organisms need clean water to survive. Water contaminated with mercury, polychlorinated biphenyls, PCBs, and other toxins can accumulate in the tissue of fish, which then gets transferred to humans during consumption. In September 2009, the U.S. Environmental Protection Agency released its Report on Fish Contamination in U.S. Lakes and Reservoirs. Their study found that nearly half of the sample lakes and reservoirs contained fish with mercury levels considered toxic to humans.” (3)
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