Caves found within limestone result from which process?

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Multiple Choice

Caves found within limestone result from which process?

Explanation:
Caves in limestone form mainly from chemical dissolution driven by groundwater that is slightly acidic from dissolved CO2. Rainwater soaks in, picks up CO2 from soil, and becomes carbonic acid. This acidic water moves through cracks and pores in the limestone and dissolves calcite, slowly enlarging openings into caves. The process is most effective below the water table, where persistent groundwater can carry away dissolved calcium carbonate and keep enlarging conduits. Surface water can contribute, but the primary cave-forming force is groundwater-mediated dissolution beneath the water table.

Caves in limestone form mainly from chemical dissolution driven by groundwater that is slightly acidic from dissolved CO2. Rainwater soaks in, picks up CO2 from soil, and becomes carbonic acid. This acidic water moves through cracks and pores in the limestone and dissolves calcite, slowly enlarging openings into caves. The process is most effective below the water table, where persistent groundwater can carry away dissolved calcium carbonate and keep enlarging conduits. Surface water can contribute, but the primary cave-forming force is groundwater-mediated dissolution beneath the water table.

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