Question

which action describes chemical weathering? (1 point)
water depositing beach sand
water cutting downward to deepen a river channel
water freezing and thawing to widen cracks in rock
water carving out a limestone cave

Explanation:

Chemical weathering involves the breakdown of rocks through chemical reactions. Water carving out a limestone cave is a chemical process (carbonation - water reacting with limestone). Water depositing beach sand is sedimentation (physical). Water cutting downward (physical erosion). Water freezing/thawing (physical weathering - frost wedging).

Answer:

water carving out a limestone cave