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9th Class Science Why do we fall Ill? Question Bank 9th CBSE Science Why do we fall Ill?

  • question_answer
                                          If you live in an overcrowded and poorly ventilated house, you may suffer from which of the following diseases?            (a) Cancer                           (b) AIDS                      (c) Air-borne diseases    (d) Cholera     

    Answer:

                      (c) Air-borne diseases     


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