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← GeographyWhich phenomenon limits primary productivity after an upwelling event with prolonged high winds?
A)Rapid thermocline re-establishment
B)Nutrient depletion in surface waters
C)Increased turbidity from sediment suspension
D)Photoinhibition due to deep mixing✓
💡 Explanation
When high winds cause intense upwelling, deep mixing may occur because the upper water column is constantly stirred, which diffuses photosynthetically active radiation, leading to Photoinhibition. Therefore primary productivity diminishes, rather than increased turbidity, re-stratification, depletion, which require other constraints.
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