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Geography

Which localized outcome commonly occurs due to coastal upwelling?

A)Enhanced near-surface marine productivity
B)Increased thermocline layer temperature
C)Decreased dissolved oxygen concentration
D)Formation of extensive coral bleaching

💡 Explanation

Coastal upwelling brings nutrient-rich water to the surface; this process, called nutrient transport, fuels phytoplankton growth because these organisms were nutrient-limited, therefore increasing productivity rather than decreasing oxygen or causing bleaching.

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