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← GeographyWhich outcome occurs when freeze-thaw events increase on talus slopes?
A)Increased sediment supply to glaciers
B)Accelerated mechanical weathering of bedrock✓
C)Decreased hillslope soil carbon sequestration
D)Stabilization of alpine permafrost extent
💡 Explanation
Accelerated mechanical weathering occurs because increased freeze-thaw cycles generate cryofracturing splitting rock via ice expansion. This is the main form of weathering, therefore increased freeze-thaw intensity accelerates bedrock fragmentation, rather than promoting soil carbon sequestration or altering glacier sediment supply.
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