Question

    Which weathering agent is biological in nature ?

    A Freeze-thaw cycles Correct Answer Incorrect Answer
    B Root penetration Correct Answer Incorrect Answer
    C Hydrolysis Correct Answer Incorrect Answer
    D Oxidation Correct Answer Incorrect Answer
    E Carbonation Correct Answer Incorrect Answer

    Solution

    Biological weathering includes root action. Freeze-thaw is physical; hydrolysis/oxidation are chemical.

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