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

  • question_answer
      What are degenerative diseases? Give examples.

    Answer:

                                  The diseases, which are caused when organ and tissues degenerate and do not work well with age are called degenerative diseases. Arthritis, disturbed sight and hearing defects are all degenerative diseases.   


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