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← GeographyWhich outcome occurs when intense rainfall weakens soil above karst?
A)Localized subsidence forms surface sinkholes✓
B)Glacial calving rates rapidly decelerate
C)Oceanic upwelling nutrient supply intensifies
D)Stratospheric ozone depletion accelerates quickly
💡 Explanation
Localized subsidence, or sinkholes form, due to soil washouts along fractures; rainwater dissolves limestone creating cavities leading to ground collapse due to the mechanism of solution weathering, because rainwater is naturally acidic; therefore sinkholes appear, rather than other effects from overloaded soil.
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