In the human-induced condition called eutrophication, the main biogeochemical cycle that is altered is the ______cycle, and the effect is to create ________ conditions and decrease species diversity..
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Eutrophication happens when excess nutrients (mainly phosphorus and nitrogen from fertilizers, sewage, etc.) enter water bodies.
This leads to overgrowth of algae. When algae die and decompose, oxygen in the water is depleted.
The result is anaerobic (low oxygen) conditions, which harm aquatic life and reduce species diversity.
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