Effects of thermal pollution - Environment & Biodiversity

Q.  Power plants discharge used hot water into rivers, streams, etc. This is Thermal pollution. This leads to

1) Thermal Stress
2) Decrease in dissolved oxygen
3) Decrease in swimming efficiency

- Published on 31 Aug 15

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

ANSWER: All of the above
 
Discharge of hot water in water body affects feeding in fish, increases their metabolism and affects their growth. Their swimming efficiency declines. Running away from predators or chasing prey becomes difficult. Their resistance to diseases and parasites decreases. Due to thermal pollution biological diversity is reduced.

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