CBSE Notes for Why Do we Fall Ill Class 9 Extra Questions
When a disease happens because of a microorganism, it is called infectious disease. Bacteria, protozoa, virus and fungi are the causes of diseases in this case. Example: diarrhea, tuberculosis, dengue, malaria, hepatitis, etc. Please refer Why Do we Fall Ill Class 9 Extra Questions for more information.
CBSE Revision Notes 