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← GeographyWhich consequence results when arid region alluvial fans heavily develop?
A)Flash flood magnitude increases downstream✓
B)Regional earthquake frequency will decrease
C)Increased nutrient dispersal throughout soils
D)Enhanced groundwater table recharge directly
💡 Explanation
The expansion of alluvial fans leads to increased impermeable areas caused by sediment compaction following rapid deposition through the mechanism of sediment aggradation; because runoff concentrates, downstream flash flood magnitude increases therefore, this is the most direct consequence rather than the impacts on other systems.
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