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      Question

      What is the primary function of humus in

      soil?
      A Acts as a buffering agent Correct Answer Incorrect Answer
      B Increases soil pH Correct Answer Incorrect Answer
      C Enhances soil salinity Correct Answer Incorrect Answer
      D Reduces water holding capacity Correct Answer Incorrect Answer
      E Decreases the surface area for microbial growth Correct Answer Incorrect Answer

      Solution

      Humus acts as a buffering agent, regulating and preventing rapid changes in soil pH and soil reactions

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