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  3. 4th Class
  4. Science

4th Class Science Sample Paper Science Olympiad Model Test Paper-15

  • question_answer
    Which layer of soil contains rich amount of humus?

    A) A Horizon         

    B) B Horizon

    C) C Horizon                     

    D) D Horizon

    E) None of these

    Correct Answer: A

    Solution :

    Not Available  


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