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← GeographyWhich flow regime occurs when oceanic upwelling weakens?
A)Reduced coastal nutrient availability✓
B)Increased deep water density
C)Strengthened thermohaline circulation
D)Enhanced benthic organism productivity
💡 Explanation
A weakened upwelling disrupts nutrient supply because the Ekman transport mechanism, driven by wind and the Coriolis effect, stalls; therefore coastal nutrient availability is reduced, rather than deep water density increasing, because density changes are linked to temperature gradients and salinity.
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