Question

Explain how water erosion by groundwater can form a cave.

Answer 1

Groundwater can cause erosion through chemical weathering. First, water that sinks into the ground mixes with carbon dioxide to form carbonic acid, a weak acid. ... Over time, these pockets develop into large holes underground—caves or caverns.

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Answer 2

Essay: Explain how water erosion by groundwater can form a cave. Water sinks into the ground and mixes with carbon dioxide to form carbonic acid. Carbon acid can break down limestone. Some of the limestone gets carried away.