Question

underground limestone caverns can be formed over long periods of time as groundwater that contains carbonic acid seeps through rock layers and slowly dissolves them. what effect of water is demonstrated by this process? movement of sediments physical erosion filling of underground reservoirs chemical weathering

Explanation:

1. Analyze "movement of sediments": This refers to transporting sediment, not dissolving rocks, so incorrect.
2. Analyze "physical erosion": Physical erosion involves breaking rocks into pieces (e.g., abrasion), not chemical dissolution, so incorrect.
3. Analyze "filling of underground reservoirs": This is about storing water, not rock dissolution, so incorrect.
4. Analyze "chemical weathering": The groundwater with carbonic acid dissolves limestone (a chemical reaction, as it changes the rock's composition), which is chemical weathering.

Answer:

chemical weathering