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Geography

Which hazard exacerbates sinkhole formation after extreme rainfall?

A)Groundwater carbonate supersaturation
B)Increased soil overburden stress
C)Enhanced limestone dissolution rate
D)Decreased sediment infiltration speed

💡 Explanation

Enhanced limestone dissolution accelerates sinkhole expansion during heavy rainfall because the increased water percolation promotes carbonic acid formation that reacts with, and erodes, the limestone bedrock. Therefore, dissolution rate is the answer, rather than a saturation or infiltration effects.

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