9th Class Science Improvement in food resources Question Bank Improvement in Food Resources

  • question_answer
    Which of the following cropping methods maintains soil fertility?

    A) Only (i)                         

    B) (i) and (ii)  

    C) (ii) and (iii)        

    D) (i), (ii) and (iii)

    Correct Answer: B

    Solution :

    Mixed cropping and crop rotation maintain soil fertility.


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