Water, one of the most important things we require to continue to life. But, there have many cases about the pollution water by human since start from 1900 years. It let the volume of drinking water been decrease seriously year by year. This is no counting the volume of sea water, because sea water cannot be used by human straightly .But, human not awakening yet, there are one case again about pollution water occur recently. When the time no water pollution will happen in our world?
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