Biology for IGCSE & O level - Human Influences On Ecosystems (Section 5 - No. 11)
What is the role of decomposers in an ecosystem experiencing eutrophication?
They consume excess nutrients.
They increase oxygen levels.
They break down dead organic matter, leading to oxygen depletion.
They control algal growth.
Explanation
Decomposers consume dead algae, which consumes oxygen in the process and leading to oxygen depletion in the water.
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