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← GeographyWhich process develops extensive drainage systems above poorly-consolidated alluvial deposits?
A)Incision through differential compaction✓
B)Subsidence due to water extraction
C)Isostatic rebound after ice melt
D)Crystallization of evaporite minerals
💡 Explanation
Differential compaction triggers channel incision because less dense alluvial material compresses faster than denser layers; this localized lowering promotes surface drainage initiation rather than groundwater depletion or rebound. Therefore incision, rather than rebound, drives drainage.
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