Question

    What is the level of carbon dioxide (CO2) present in the

    air within the soil?
    A 0.003% Correct Answer Incorrect Answer
    B 0.03% Correct Answer Incorrect Answer
    C 0.3% Correct Answer Incorrect Answer
    D 3% Correct Answer Incorrect Answer

    Solution

    The level of carbon dioxide (CO2) in soil air can vary but is typically around 0.3 to 1.5% by volume. This CO2 is generated by microbial respiration and root respiration. High CO2 levels can affect plant growth, while low levels can limit microbial activity.

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