Given below are two statements. In the light of the above statements, choose the correct answer from the options given below.
Statement I:Thermal pollution, usually effluent from cooling systems of power plants or other industries, alters water temperature in a lake or stream.
Statement II:Humans also cause thermal pollution by altering vegetation cover and run-off patterns.
ABoth Statement I and Statement II are true ✓ Correct
BBoth Statement I and Statement II are false
CStatement I is true but Statement II is false
DStatement I is false but Statement II is true
Correct answer: (A) Both Statement I and Statement II are true
Explanation
Both statements about thermal pollution are true.
Statement 1 is true, as heated effluent from power plant cooling raises the temperature of a lake or stream.
Statement 2 is true, as clearing vegetation and changing run off also warm water bodies.
Warm discharge lowers dissolved oxygen and stresses aquatic organisms.
Removing shade trees lets sunlight heat streams, and paved run off carries added warmth.
Cooling towers and holding ponds are used to cut the thermal load before discharge.
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