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    Question

    Which of the following statements is/are true?

    Statement A: Soil aggregation is promoted by the presence of soil microorganisms. Statement B: Gleyed soils are characterized by poor drainage and anaerobic conditions. Statement C: Podzolization is a soil-forming process that occurs in well-drained, acidic soils.
    A Only A is correct. Correct Answer Incorrect Answer
    B Only B is correct. Correct Answer Incorrect Answer
    C Only C is correct. Correct Answer Incorrect Answer
    D A and B are correct. Correct Answer Incorrect Answer

    Solution

    Soil aggregation is promoted by the activities of soil microorganisms. Microorganisms, such as bacteria and fungi, produce substances like glues or gums that help bind soil particles together, forming aggregates.  Gleyed soils are characterized by poor drainage and anaerobic conditions. They are often found in areas with high water tables or poor drainage, leading to waterlogged soil conditions. These conditions result in the depletion of oxygen from the soil, creating anaerobic (low oxygen) environments. Podzolization is a soil-forming process that occurs in poorly drained, acidic soils. It is characterized by the leaching of minerals, particularly iron and aluminum, from the upper layers of the soil profile.

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