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← GeographyWhich feedback results if Antarctic Bottom Water formation decreases?
A)Reduced deep ocean oxygen replenishment✓
B)Increased subtropical gyre formation
C)Increased coastal upwelling intensity
D)Weakened atmospheric Hadley cell circulation
💡 Explanation
Decreased bottom water formation reduces the global Thermohaline Circulation, weakening oxygen transport to deep waters because higher density water sinks and pushes out the deep layer. Therefore, less oxygen reaches the bottom sediment, rather than causing other circulation changes.
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