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← GeographyWhich increasing risk results when intense rainfall interacts with existing karst topography?
A)Increased frequency of sinkhole formation✓
B)Decreased aquifer recharge rates
C)Reduced soil erosion upstream regions
D)Enhanced growth of speleothems
💡 Explanation
Increased ground saturation weakens subsurface support because dissolution causes voids; therefore, sinkhole formation risk escalates. This occurs due to enhanced chemical weathering, rather than increased recharge which requires intact soil.
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