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  3. Water Pollution Water pollution is an undesirable change in the state of water, / polluted with harmful substances. / It is

Water Pollution Water pollution is an undesirable change in the state of water, / polluted with harmful substances. / It is

admin2015-07-28  62
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答案 Water Pollution Water pollution is an undesirable change in the state of water, / polluted with harmful substances. / It is the second most important environmental issue next to air pollution. / Any change in the physical, chemical or biological properties of water / will have a harmful effect on living things. / Water pollution affects all the major water bodies of the world / such as lakes, rivers, oceans and groundwater. / Polluted water is unfit for drinking and for other consumption processes. / It is also not suitable for agricultural and industrial use. / The effects of water pollution are harmful to human beings, plants, animals, fishes and birds. / Water problems in the future will become more intense and more complex. / Our increasing population will tremendously increase urban wastes, primarily sewage. / On the other hand, increasing demands for water / will decrease the amount of water available for dealing with wastes. / Due to water pollution, the entire ecosystem gets disturbed.
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