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    Question

    The concentration of CO2 in the soil atmosphere is

    …………………………………..
    A 0.03% Correct Answer Incorrect Answer
    B 0.3% Correct Answer Incorrect Answer
    C 3% Correct Answer Incorrect Answer
    D 3.3% Correct Answer Incorrect Answer

    Solution

    The concentration of CO2 in soil is 0.25-0.3%.

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