Pollution of rivers, lakes and seas is a major concern for people who seek to protect the environment. What are the possible causes of water pollution, and what effects does this have on animal life and human society?

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7.0分

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7.0分

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6.5分

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6.0分

An essential element of the ecosystem is water. Water pollution occurs when harmful chemicals or microorganisms are released into water bodies, which results in the degradation of animal and human’s life quality.