Question

which of these describes physical weathering? minerals in rocks being broken down chemically rocks being broken down by freezing and thawing plants, lichens, and mosses breaking down rocks

Explanation:

Physical weathering involves mechanical processes that break down rocks without changing their chemical composition. Freezing and thawing is a physical process where water seeps into rocks, freezes (expanding and exerting pressure), and then thaws. This repeated action breaks the rock physically. Chemical breakdown of minerals (first option) is chemical weathering. Biological agents like plants, lichens, and mosses (third option) contribute to biological weathering.

Answer:

B. rocks being broken down by freezing and thawing