3. Which is the best example of physical weathering?
A.the cracking of rocks caused by the freezing and thawing of water
B.the formation of a sandbar along the side of the stream
C.the chemical reaction of limestone with acid rain
D.the rusting iron nail
A.the cracking of rocks caused by the freezing and thawing of water
B.the formation of a sandbar along the side of the stream
C.the chemical reaction of limestone with acid rain
D.the rusting iron nail
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Answer:
The correct answer is (a)
Explanation:
the cracking of rock caused by the freezing and thawing of water.