Question

Why are factory effluents harmful to aquatic
organisms?​

Answer 1

Answer:

But if inadequately treated or in excessive quantities, sewage effluent can seriously damage the plant and animal life of a river by reducing the oxygen content of the water.  Some industrial effluents discharged in large quantities can be similarly harmful.

Explanation:

Answer 2

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But if inadequately treated or in excessive quantities, sewage effluent can seriously damage the plant and animal life of a river by reducing the oxygen content of the water. Some industrial effluents discharged in large quantities can be similarly harmful.❤