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  5. Why do we fall Ill?

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

  • question_answer
                  (i) Which bacterium causes peptic ulcers? (ii) Who discovered the above pathogen for the first time?

    Answer:

                      (i) Helicobactor pylori. (ii) Marshall and Warren.


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