Question

choose the correct answer. how does chemical weathering occur? plants, lichens, and mosses accelerating breakdown due to physical factors such as freezing and thawing by chemically breaking down rocks by water and gases

Explanation:

Chemical weathering involves chemical reactions. Water and gases react with rocks to break them down chemically, unlike physical - factor based or biological - agent based processes in other options.

Answer:

by chemically breaking down rocks by water and gases