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Environmental-Issues

When domestic sewage mixes with river water, __________

Small animals like rats will die after drinking river water The increased microbial activity released micronutrients such as iron The increased microbial activity uses up dissolved oxygen The river water is still suitable for drinking as impurities are only about

0.1 %

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When domestic sewage mixes with river water, __________

The increased microbial activity uses up dissolved oxygen

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When domestic sewage mixes with river water, __________

Nitrogen oxides released in the stratosphere cause ozone depletion due to<span><br> </span></h2></div>

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Environmental Issues

Biology-MCQS

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Biochemical oxygen demand in a river water </h2></div>