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← GeographyWhich outcome results when CO₂ saturation decreases inside karst stalactite formations?
A)Calcium carbonate precipitates solidify quickly
B)Stalactite growth rates steadily decline✓
C)Increased thermal fracturing occurs rapidly
D)Erosion via dissolution accelerates rapidly
💡 Explanation
Stalactite growth is driven by the Calcium Carbonate Deposition mechanism. Slow CO₂ degassing elevates HCO₃ levels; because decreased CO2 saturation affects this equilibrium, the rate of calcite deposition decreases, therefore stalactite growth slows rather than continuing unchanged or speeding up, and is clearly not simple erosion.
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