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← GeographyWhich risk increases substantially as terminal alluvial fans coalesce?
A)Diminished aquifer recharge rates downstream✓
B)Increased regional geothermal gradient stability
C)Enhanced selective precipitation of evaporites
D)Accelerated chemical weathering of bedrock
💡 Explanation
Diminished recharge increases because interfan areas with finer sediments are buried, reducing infiltration; therefore, recharge decreases rather than increasing geothermal stability or affecting weathering because this process primarily changes water flow pathways; The mechanism at play here is sediment sorting.
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