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← GeographyWhich global weather pattern establishes persistent arid conditions near 30° latitude?
A)Hadley cell subsidence effect✓
B)Rossby wave trough alignment
C)Polar vortex meridional breakdown
D)Oceanic gyre thermal intensification
💡 Explanation
Subsidence within the Hadley cells creates high pressure at 30° latitude, reducing precipitation there because descending air warms and dries via adiabatic compression. Therefore, deserts form here, rather than at the equator where moist air rises.
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