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← GeographyWhich cave formation process ceases when groundwater oxygen is depleted?
A)Limestone dissolution via carbonic acid✓
B)Calcite precipitation forming speleothems
C)Gypsum deposition from sulfate reduction
D)Silica polymerization creating cave pearls
💡 Explanation
Dissolution rates decrease because continued weathering of limestone requires dissolved oxygen to form carbonic acid, which then reacts with the rock; therefore, dissolution slows, rather than formation or deposition driven by other chemical compounds.
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