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Geography

Which outcome primarily increases inside a water-filled limestone cave during periods of lower atmospheric pressure?

A)Increased speleothem growth rate
B)Dissolved carbon dioxide concentration
C)Enhanced water table infiltration
D)Rate of cave ceiling collapse

💡 Explanation

Increased dissolved carbon dioxide occurs because lower atmospheric pressure reduces the gas's aqueous solubility, a process described by Henry's Law; therefore, more CO2 remains dissolved inside the cave, rather than precipitating calcite or creating structural risks at decreased CO2 partial pressures near the surface.

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