Question

explain how water pollution can be checked​

Answer 1

Answer:

Water pollution is detected in laboratories, where small samples of water are analysed for different contaminants. Living organisms such as fish can also be used for the detection of water pollution. Changes in their behaviour or growth show us, that the water they live in is polluted.

Explanation:

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Answer 2

Answer:

Water pollution is the contamination of water bodies, usually as a result of human activities.soPhysical, chemical and biological tests can be done.