Effects of water pollution - Environment & Biodiversity

Q.  Which of the following are effects of water pollution?

1) Eutrophication
2) Biomagnification
3) Water borne diseases
4) Thermal stress
5) Biochemical oxygen demand decreases

- Published on 31 Aug 15

a. Only 1, 3, 4 and 5
b. Only 1, 2, 3 and 4
c. Only 1, 3 and 4
d. All of the above

ANSWER: Only 1, 2, 3 and 4
Chemicals in water are eaten by organisms. These organisms are then eaten by others thus leading to biomagnifications. Also due to excessive organic water pollutants, the Biochemical oxygen demand increases leading to lack of oxygen for others in the water.

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