Ice wedging causes mechanical weathering of rock by mean of

One of the most common forms of weathering in areas that have frequent freeze/thaw cycles is ice wedging. This type of mechanical weathering breaks apart rocks and other materials using the expansion of freezing water. Water seeps into small cracks in a rock where it freezes, expands and causes the crack to widen.

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Janicey

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the answer is the first option

explanation:

just googled it m8. not that hard

lol