Water is very important in our live .we cannot live without it. People, animals and plants would die if they do not have water .water is used for many things .It is used for drinking ,cleaning ,farming and industry .About three quarters of the world is covered by water .There are many sources of water .They are rainwater ,seawater ,underground water and river water .Seawater is not good for drinking .It is too salty .About 90% of all the fresh water in the world in the Antractica.Finally, we can say that water is as precious as gold .
10-15-2008, 12:51 AM
الله يفرج همك يا خوارزميه مثل ما فرجتي همي
والله كنت مررررررررررره محتاجته
10-15-2008, 02:10 AM
Importance of Water
Water is the common name applied to the liquid form (state) of the hydrogen and oxygen compound. Pure water is an odorless, tasteless, clear liquid. Water is one of nature's most important gifts to mankind. Essential to life, a person's survival depends on drinking water. Water is one of the most essential elements to good health -- it is necessary for the digestion and absorption of food; helps maintain proper muscle tone; supplies oxygen and nutrients to the cells; rids the body of wastes; and serves as a natural air conditioning system. Health officials emphasize the importance of drinking at least eight glasses of clean water each and every day to maintain good health.
Our Earth seems to be unique among the other known celestial bodies. It has water, which covers three-fourths of its surface and constitutes 60-70 wt % of the living world. Water regenerates and is redistributed through evaporation, making it seem endlessly renewable. So why worry?
Actually, only 1% of the world's water is usable to us. About 97% is salty sea water, and 2% is frozen in glaciers and polar ice caps. Thus that 1% of the world's water supply is a precious commodity necessary for our survival. Dehydration (lack of water) will kill us faster than starvation (lack of food). Since the plants and animals we eat also depend on water, lack of it could cause both dehydration and starvation. The scenario gets worse. Water that looks drinkable can contain harmful elements, which could cause illness and death if ingested.