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    Question

    The soils of grassland ecosystems, characterized by a

    thick, dark surface horizon comes under which soil order?
    A Alfisols Correct Answer Incorrect Answer
    B Mollisols Correct Answer Incorrect Answer
    C Spodosols Correct Answer Incorrect Answer
    D Histosols Correct Answer Incorrect Answer
    E Inceptisols Correct Answer Incorrect Answer

    Solution

    Mollisols are the soils of grassland ecosystems. They are characterized by a thick, dark surface horizon. This fertile surface horizon, known as a mollic epipedon, results from the long-term addition of organic materials derived from plant roots Mollisols are among some of the most important and productive agricultural soils in the world and are extensively used for this purpose

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