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Geography

Which outcome is accelerated along ocean surface currents when increased atmospheric temperatures weaken the density gradient near glacier streams?

A)Enhanced thermohaline stratification
B)Downwelling zone expansion
C)Reduced vertical mixing
D)Greater upwelling intensity

💡 Explanation

Reduced vertical mixing occurs because warmer surface waters make it harder for denser, colder water to rise; the thermal stratification mechanism increases stability, therefore inhibiting the colder, glacier stream water from mixing upwards, rather than promoting mixing patterns.

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