Physical weathering breaks rocks down into smaller pieces by altering the chemical makeup of the rock.

Question

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Physical weathering breaks rocks down into smaller pieces through physical processes such as freezing and thawing, abrasion, and root wedging, without changing the chemical composition of the rock. Chemical weathering, on the other hand, alters the chemical makeup of the rock through processes such as oxidation and hydrolysis.

Physical Weathering Breaks Rocks Down into Smaller Pieces by Altering