Respuesta :

Physical weathering is when weather or other natural things break something down.  ( Wind and rain wearing down a rock into a different shape)  Chemical weathering is when something is changed or worn down by unnatural resources. (Oil stains on a tree due to a spill )

Answer:

In chemical weathering, the composition of the weathered substance is changed.

Explanation:

Weathering processes crack, wear away, and weaken rocks. ... Physical and chemical weathering degrade rocks in different ways. While physical weathering breaks down a rock's physical structure, chemical weathering alters a rock's chemical composition. Welcome.

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