Lesson: Chapter 15 — The biosphere

The effects of pollution 2 of 5 Reset answers

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Question 2

Why do fish die in a lake with eutrophication?

A The water becomes too cold B The water becomes salty C The algae eat the fish D Decaying algae use up the dissolved oxygen

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Decaying algae use up the dissolved oxygen. Bacteria decomposing the dead algae use the oxygen and release foul gases.

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