Which statement describes how upwelling occurs?
O A. Saltier water sinks as water above it freezes and forms sea ice.
O B. Saltier water rises as denser freshwater sinks. .
O C. Denser water rises as less dense water sinks. .
D. Denser water rises to replace surface water pushed by wind.

Upwelling occurs when winds push surface water away from the shore and deeper water rises to fill the gap. During upwelling, wind-displaced surface waters are replaced by cold, nutrient-rich water that wells up from below.

Explanation:

So Really its D

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Which statement describes how upwelling occurs? O A. Saltier water sinks as water above it freezes and forms sea ice. O B. Saltier water rises as denser freshwater sinks. . O C. Denser water rises as less dense water sinks. . D. Denser water rises to replace surface water pushed by wind.

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Which statement describes how upwelling occurs?
O A. Saltier water sinks as water above it freezes and forms sea ice.
O B. Saltier water rises as denser freshwater sinks. .
O C. Denser water rises as less dense water sinks. .
D. Denser water rises to replace surface water pushed by wind.