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Pollution, Climate and Conventions · Question 15 of 67

Question 15

MediumOriginal question

A power station returns hot cooling water to a river. Why can this harm the fish downstream?

Options for question 15

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. Gases dissolve less well in warm water, so heated water carries less oxygen.

  2. At the same time, warmth speeds up the fish's own need for oxygen. This is thermal pollution.

Concept
Thermal pollution
Typical time
60 s
Your time
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The rule this testsAir, water, soil and noise pollution
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