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Biology
6. Natural Resources
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Q41 of 287 Page 362

What is thermal pollution?

Thermal pollution is defined as change in average temperature of water that results in degradation of water quality. Industries use water as coolants in power plants thus causing thermal pollution.


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39

What is sewage?

40

Name the disease caused by mercury pollution of water.

42

Define soil.

43

Name three physical agents which cause weathering of rocks.

Questions · 287
6. Natural Resources
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