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The human race uses a lot of water, for many different purposes: drinking, washing, manufacturing, and irrigation of crops or lawns. And the population of the human race has been increasing very rapidly for the past few centuries, while the water supplies of the planet are diminishing, because aquifers are being exhausted, and many water sources have become polluted. So if demand increases while supply diminishes, we are going to have shortages (and many locations already do have shortages). Hence, it is necessary to conserve water.

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16y ago

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