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← GeographyWhich feedback mechanism regulates global ocean thermohaline circulation when sea ice formation increases?
A)Increased salinity and density driving sinking✓
B)Decreased albedo enhancing solar absorption
C)Increased precipitation diluting surface waters
D)Decreased nutrient availability limiting productivity
💡 Explanation
When sea ice forms, salt is excluded, increasing the salinity and density of the remaining water which causes enhanced sinking, driving thermohaline circulation because density differences fuel the flow. Therefore, sinking occurs, rather than albedo change, precipitation or nutrient limitation which would have opposing effects on circulation.
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