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← GeographyWhich mechanism explains increased stalactite formation after rainfall events?
A)Increased carbonic acid dissolution✓
B)Decreased evaporation within caves
C)Enhanced mineral precipitation kinetics
D)Elevated cave air CO2 partial pressure
💡 Explanation
Increased rainfall enhances stalactite creation due to increased carbonic acid dissolution; as rainwater percolates through soil it dissolves atmospheric CO2 forming carbonic acid, which dissolves limestone. Enhanced calcium carbonate availability drives precipitation rather than reduced evaporation, therefore stalactite volume increases.
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