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Notes of chapter Why do we fall il.konsi help✌️✌️✌️✌️✌️✌️​

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  • Non-infectious DISEASES: The disease which does not spread by contact between infected and healthy PERSON through air and WATER, is called non-infectious disease.
  • Study Material and Notes of Ch 13 Why Do We Fall ill Class 9th Science.

  1. Disease SARS

2. PATHOGEN Bacteria

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