The EPA tested the water along the coast of California and found that it was high in phosphates and nitrates. What might the EPA be MOST concerned about?
A. a waste spill that could reduce the oxygen supply in the water
B. the ozone layer, which could reduce the oxygen supply in the water
C. coral bleaching that could reduce the oxygen supply in the water
D. an algal bloom that could reduce the oxygen supply in the water
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D. an algal bloom that could reduce the oxygen supply in the water. Algal blooms can deplete oxygen levels in the water, leading to hypoxia, which can harm aquatic life and disrupt the ecosystem.
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