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← GeographyWhich changes due to increased stratification limit upwelling?
A)Reduced nutrient availability near surface✓
B)Increased density difference among layers
C)Enhanced thermocline mixing efficiency
D)Decreased surface water salinity levels
💡 Explanation
Increased stratification reduces vertical water movement because it enhances the barrier to the upwelling mechanism; reduced movement diminishes nutrient replenishment to the surface, therefore limiting primary production rather than enhancing mixing or changing salinity.
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