Water kills thousands of people and destroys many acres of crops every year. But water also gives life to all living things in the world.Without water life is unthinkable. We must have water to grow our food, feed the birds and animals in our homes, grow forests and produce electricity. We use waterways to carry our goods of trade. Even the human body, which is seventy parts out of one hundred of water itself, cannot exist for long without water.Ever since the earth began, large quantities of water have been used by living things. Yet for every drop of water that is taken from one place, another drop is put back from somewhere else. Nature has a very clever way of carrying water from cloud to land and sea and back to cloud. No water has ever been lost.But nature does not put water where and when we need it. While some men are drowning, others in another part of the world are dying of thirst. Thus, people all over the world are trying to bring water to places where it is scarce, to control its flow in times of floods and to make greater use of it.
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