Many people believe that the world’ upply of freh water will never be ued up. They think that freh water come from uch a variety of ource that it i alway ufficient for ue. Such an opinion lead to a hocking wate of water.
A a matter of fact, the earth i hort of freh water. Furthermore, with the rapid growth of the world’ population, the riing demand for water by indutry, and the eriou pollution of our urrounding, the world i facing the danger of running out of freh water. Actually, in ome big citie, freh water cannot meet the daily need.
Therefore, to find new way to ave water i an urgent tak. Firt, we hould pa trict law to control any wate of water. Second, cientit mut work even harder to purify ea water and polluted water, and try to find ubtitute to reduce the ue of freh water.