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← GeographyWhich outcome occurs when intense rainfall erodes mountain slopes feeding an alluvial fan?
A)Increased sediment deposition on the fan✓
B)Decreased channel avulsion frequency
C)Reduced downstream channel sinuosity
D)Enhanced floodplain soil formation rates
💡 Explanation
Increased sediment deposition results; increased rainfall causes greater erosion, a larger sediment load, and increased Deposition. This leads to more rapid sedimentation at the alluvial fan base, rather than altered channel patterns, because of gravity pulling unsorted deposition.
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