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6 July, 19:28

Which statements describe physical weathering? Select all that apply.

A. Two rocks hit against each other in a fast-flowing stream and break apart.

B. Oxygen and water change the compostion of the minerals in a rock

C. Small rocks are pushed together when a mole digs an underground den

D. Mosses grow on a rock and produce acids that wear away the rock over time.

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  1. 6 July, 21:35
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    A and D because weathering is the process of a rock breaking and wearing down over time. b doesnt apply, because that is changing of the chemical structure, not the physical, and c is just movement of rocks, not breaking of rocks.
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