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← GeographyWhich outcome occurs when CO2 outgasses in solution?
A)Calcite precipitation on cave ceilings✓
B)Increased hydrolysis of silicate minerals
C)Enhanced oxidation of sulfide deposits
D)Accelerated chemical weathering on silicates
💡 Explanation
Stalactite formation involves calcite precipitation because the solubility of calcium carbonate decreases as dissolved CO2 decreases, leading to the deposition of calcite via the common-ion effect, thereby forming stalactites, rather than dissolution.
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