9th Class Science Improvement in food resources Question Bank 9th CBSE Science Improvement in food resources

  • question_answer
      Discuss why pesticides are used in very accurate concentration and in very appropriate manner.            [NCERT Exemplar]

    Answer:

                      Pesticides are used in very accurate concentration and in a very appropriate manner because if used in excess it (a) harms the soil and causes loss of fertility, (b) checks the replenishment of organic matter, (c) kills the microorganism of soil, (d) causes air, water and soil pollution,                   


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