Question

biological weathering is driven by organisms like plants, lichens, and mosses, accelerating rock breakdown by chemically altering rock substances. how does chemical weathering occur? plants, lichens, and mosses accelerating breakdown by chemically breaking down rocks by water and gases due to physical factors such as freezing and thawing

Explanation:

Step1: Define chemical weathering

Chemical weathering involves chemical reactions.

Step2: Analyze options

A is biological weathering. C is physical weathering. B is chemical weathering as water and gases cause chemical - rock reactions.

Answer:

B. by chemically breaking down rocks by water and gases