When a volcano erupts, ash can enter Earth's atmosphere. Eventually, the ash falls back down to Earth's surface. Which term describes the falling of volcanic ash to Earth's surface? A. Erosion B. Deposition C. Subsidence D. Weathering

Answer: Deposition

Explanation: Deposition occurs when the agents such as wind or water deposits sediments of weathered surface materials to a land mass.

Deposition is a geological process in which sediments such as ash, soil, and weathered rock materials are deposited back to the earth's surface via gravitational pull and the sediments are added to a landform.

Agents of deposition include wind, ice, water and gravity transport. Weathered surface material are deposited, building up layers of sediment.