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    Question

    Identify the incorrectly matched rock formation

    processes:
    A Chalk: Chemically formed Correct Answer Incorrect Answer
    B Shale: Mechanically formed Correct Answer Incorrect Answer
    C Coal: Organically formed Correct Answer Incorrect Answer
    D Chalk: Organically formed Correct Answer Incorrect Answer

    Solution

    Chalk is an organically formed sedimentary rock resulting from the accumulation of calcium carbonate from marine organisms. Chemical sedimentary rocks are formed through mineral deposition from solutions, not applicable to chalk.

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