What is water
Water is one of the most important sources of our life. The human body consists of from 78% to 55% water, depending on body size. All living things need water even more than food; hence, water is very valuable resource. Water covers over 70 percent of the earth, 96.5% of all water in our planet is in oceans. But only 2% of all Earth's water is drinkable ( ga.water.usgs.gov). In fact, people need water to drink, to wash our hands, to cook, in industrial use and many other things. Any changes in water quality adversely affect living organisms or make ...