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CBSE Class 9 Answered

(a)What are the different ways in which water gets polluted? (b)How does it affect the life forms?
Asked by Topperlearning User | 21 Mar, 2016, 02:59: PM
answered-by-expert Expert Answer

(a) The addition of undesirable substances like fertilizers, pesticides and mercury salts contaminates water which can cause diseases like cholera.

(b) The removal of desired substances like oxygen from the water adversely affects the aquatic organisms. A sudden change in temperature in water bodies would be dangerous and affect the breeding of certain organisms. The eggs and larvae are adversely affected by the change in temperature.

Answered by | 21 Mar, 2016, 04:59: PM
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