Eutrophication Positive Feedback Loop
An increase in agricultural runoff causes eutrophication in a lake ecosystem. Which of the following scenarios describes a positive feedback loop associated with this process?
A
Bacterial decomposition → nutrient sequestration → reduced algae
B
Increased zooplankton → algae consumption → improved clarity
C
Reduced fish predation → zooplankton increase → algal decline
D
Algal blooms → oxygen depletion → fish die-off → nutrient release
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