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← GeographyWhich risk increases when subsurface limestone dissolution forms covered sinkholes under urban infrastructure?
A)Rapid, unpredictable surface subsidence✓
B)Increased seismic wave amplification
C)Diminished groundwater recharge rates
D)Vegetation shifts to drought-tolerant species
💡 Explanation
The risk of sinkholes forming causes subsidence because the increased dissolution creates cavities that collapse under structural load, leading to sudden ground failure rather than gradual geological shifts or ecological change, driven by physical unloading (isostasy).
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