Water pollution is caused by

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(C) Water pollution occurs when harmful substances,such as chemicals or microorganisms,contaminate a stream,river,lake,ocean,or aquifer. Industrial ef

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Industrial effluents

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(C) Water pollution occurs when harmful substances,such as chemicals or microorganisms,contaminate a stream,river,lake,ocean,or aquifer. Industrial effluents are a major source of water pollution as they contain toxic chemicals,heavy metals,and other pollutants that are discharged directly into water bodies without proper treatment. Ammonia is also a pollutant,but industrial effluents represent a broader and more significant category of water pollution sources. Phytoplankton are natural components of aquatic ecosystems,and smoke primarily contributes to air pollution.

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