9th Class Science Natural resources Question Bank 9th CBSE Science Natural resources

  • question_answer
      Fertile soil has lots of humus. Why?

    Answer:

                                      Fertile soil has lots of humus because it contains microorganisms that decompose dead organic matter present in soil and help in the formation of humus. Humus is a source of minerals, absorbs water and makes the soil porous for easy passage of plant roots.


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