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← GeographyWhich phenomenon amplifies desertification when vegetation diminishes in arid latitudes?
A)Hadley cell descent intensification✓
B)Increased ocean current upwelling
C)Strengthened thermohaline circulation
D)Enhanced Rossby wave propagation
💡 Explanation
Desertification causes greater albedo and therefore reduced sensible heat flux; because the air becomes cooler and denser, subsidence at the descending branch of the Hadley cell is strengthened. This subsidence inhibits cloud formation rather than promoting atmospheric moisture, furthering desertification.
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