What ecological disaster occurs when massive nutrient runoff causes rapid algae growth, depleting dissolved oxygen levels and creating aquatic "dead zones"?

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A Ocean acidification
B Biomagnification
C Coral bleaching
D Eutrophication

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Answer: D. Eutrophication

• Answer: D) Eutrophication
• Explanation: Nutrient pollution (usually from agricultural fertilizers) triggers algal blooms. When the algae die and decompose, bacteria consume the available oxygen, suffocating marine life.

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What ecological disaster occurs when massive nutrient runoff causes rapid algae growth, depleting dissolved oxygen levels and creating aquatic "dead zones"?

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