Know : 10 Quick Facts Water

When ground water is contaminated it may remain that way for several thousand years.Human blood is 83% water.  Human bones are 25% water.Salt water is 97% of water on earth.  Three percent is fresh water.   Most of the freshwater stored on the earth is frozen in glaciers.Each day the sun evaporates 1,000,000,000,000 (one trillion)...