Water is the source of life, we all biological survival water is one of the basic conditions, especially the survival and development of mankind. At present, the world is facing the crisis of clean water and fear, although our country's water resources in the sixth in the world, but still belongs to the serious shortage of countries. On earth, more than two-thirds of the area covered by water, but most of the sea water, only about 3%. While humans use, not for water 100%. Almost all the earth, and all the animals and plants need water on moist, to survive. And we can no more water human. The proportion of water body has accounted for about 70 days, we can not eat, but can not drink three days. If human dehydrated more than 15% ~ 20%, may cause death.
Once the algae, fish can be clear enough to see the children playing in the river speaking, bliss. YangLiuYiYi shore, reflecting on the calm water, add a lot of joy for small, quiet! However, with the development of industry, our water by increasing pollution, most of the oil, waste water discharge ships were poisoned, fish. Some will use water factory, finished with water, and then back to the river water line, the polluted water, rapid and some factory pigment to the river, the more serious pollution of water.