Water, source of life

Water is the most abundant material on earth in i, covering about 71 percent of the earth. Life is almost entirely water, 50 to 97 percent of the total weight of plant and animal life and about 70 percent of our body weight.

We can live a month without food, but only lasts a few days without water. like energy, is essential for agriculture, industry, and almost all life.

With increasing water demand for human activity and also the increase of population 212 000 people per day (1985), water scarcity is a thing that is before us.

The amount of water on the surface of this earth as a whole is relatively fixed. Water will always be there because the water circulates from the atmosphere never ceases to earth and return to the atmosphere following the hydrologic cycle . But if the water will be present at the place, time, and quality is needed?.

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