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← GeographyWhich outcome occurs as surface ocean nitrate declines during algal upwelling?
A)Algal bloom slows considerably✓
B)Silica deposition increases rapidly
C)Zooplankton grazing pressure declines sharply
D)Deep-water oxygen concentration increases mildly
💡 Explanation
Diminished nitrate availability limits algal growth and slows blooming because nitrate is crucial for protein synthesis, therefore the algal bloom declines, rather than other nutrient-related or oxygen-dependent possibilities, due to nutrient limitation affecting metabolism.
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