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    Question

    ……………………….is non-living organic matter

    within soil, derived from the microbial decomposition of plants and animals 
    A Soil colloids Correct Answer Incorrect Answer
    B Lipids Correct Answer Incorrect Answer
    C Polysaccharides Correct Answer Incorrect Answer
    D Humus Correct Answer Incorrect Answer
    E Lignin Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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