2. Sample Papers
  3. 7th Class
  4. Science

7th Class Science Sample Paper Science Olympiad Model Test Paper-2

  • question_answer
    The organic matter formed by the decomposition of dead plants and animals by the micro-organisms (like certain bacteria and fungi) is called:

    A) soil                   

    B) humus

    C) humidity           

    D) biodegradable substance

    E) None of these

    Correct Answer: B

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