Question

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

Explanation:

Chemical weathering is the process of rocks being broken - down chemically. Water and gases react with minerals in rocks, causing chemical changes. Plants, lichens and mosses are related to biological weathering, and freezing - thawing is related to physical weathering.

Answer:

by chemically breaking down rocks by water and gases