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← GeographyLarge sinkhole formation accelerates when which geochemical mechanism intensifies?
A)Enhanced limestone dissolution by acidic groundwater✓
B)Increased gypsum evaporite precipitation rate
C)Decreased organic matter anaerobic decomposition
D)Elevated bicarbonate buffering capacity expansion
💡 Explanation
Sinkholes expand due to enhanced dissolution because acidic groundwater, charged with CO2, interacts with calcium carbonate; creating calcium bicarbonate via dissolution. Therefore the sinkhole expands, rather than from precipitation or organic reactions in an equivalent system.
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