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Water-related Assignments学校老师叫我们做一个关于水的作业，请问大家能帮忙吗 ？Water-related Assignments Background:Fact: Water is essential to all life.Fact: Two thirds of the earth’s surface is covered with water, but 97% of that water is saline. Of the 3% of the world’s water supply considered “fresh”, only 1% is readily available for human use.
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