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← GeographyWhich mass wasting outcome accelerates when permafrost degradation increases the active layer thickness?
A)Increased rate of mountainous solifluction✓
B)Formation of glacial erratic deposits
C)Accelerated chemical weathering of bedrock
D)Intensified coastal erosion exclusively at sea
💡 Explanation
Increased active layer thickness unloads soil, allowing saturated creep, therefore solifluction intensifies, because thawed sediment flows downhill due to gravity, rather than triggering glacial erratic deposits or rock weathering in place.
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