Match the mechanical weathering process with the correct definition
A) Expansion of ice forces a rock apart
B) Mineral crystal development forces a rock apart
C) Reduction of pressure on a pluton results in concentric layers breaking off
D) Living materials break down a rock
1) Frost wedging
2) Salt crystal growth
3) Sheeting
4) Biological activity
Answers: 1) A 2) B 3) C 4) D
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