Question

give two ways by which water can be affected by pollutants

Answer 1

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Water gets contaminated by following ways:

(i) Water gets contaminated when sewage is disposed off in rivers.

(ii) Chemicals which are harmful and poisonous are thrown in water resources by various industrial units.

Answer 2

Answer:(i) By acid rain:

The gases like SO2, CO2 ans SO3 reacts with rain water to form acids and when rain comes down this rainwater along with acids mixes with water bodies and pollute them

(ii) Pollutants released by factories in the rivers and streams