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Which of these actions is an example of chemical weathering?
Freezing water widens the cracks in rocks.
Plant roots force their way into cracks in rocks and break them.
Oxygen in air reacts with iron content in rocks, causing them to change color.
Strong winds peel soft rock away, leaving harder rock behind.

Respuesta :

SaifyTaffy
¨Oxygen in air reacts with iron content in rocks, causing them to change color" This changes the composition of the rock, and is hard to reverse.
hericewolf
C. Oxygen in air reacts with iron content in rocks, causing them to change color.

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