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← GeographyWhich process accelerates downslope movement in periglacial regions exhibiting cirques?
A)Solifluction following thaw cycles✓
B)Chemical weathering from acid rain
C)Eolian transport of fine sediment
D)Tectonic uplift along pre-existing faults
💡 Explanation
When temperatures fluctuate around freezing near cirques, solifluction occurs because the active layer thaws, becoming saturated and losing shear strength, allowing slow downslope flowage over permafrost. Therefore solifluction is accelerated, rather than weathering, eolian transport, or tectonic uplift, which require different conditions.
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