why do we fall ill class 9 pdf

1. БHealthБ
is a state of being well enough to function well physically, mentally, and socially. 2. БDiseaseБ ( disturbed ease) means being uncomfortable. One or more systems of the body will change, give rise to БSymptomsБ ( Cough, loose motions, pus formation, headache, fever, breathlessness, vomiting, fits, unconsciousness, inflammation, swelling and general effects - a Doctor look for the basis of symptoms). Diseases are basically two types- Acute Disease & Chronic Disease 3. Acute Disease: The disease which lasts for only a short period of time is called Acute Disease Ex. Common Cold. 4. Chronic Disease: The disease which lasts for long period of time is called Chronic Disease Ex. Tuberculosis. 5. Causes of Diseases : Most of the diseases have many causes, rather than one single cause, like unclean water, nourishment, genetic differences, genetic abnormalities e. g. Based on the causes diseases are of two types: Non-Infectious Diseases and Infectious Diseases. 6. Non-Infectious Diseases: Not caused by infectious agents, mostly internal and non- infectious cause.


Ex. Cancer 7. Infectious Diseases: Caused by infectious agents. (Please refer Fig. 13. 1 (a-e), NCERT Text Book Page- 181). a)The infectious diseases spread by agents are called as Communicable Diseases. Why do we fall ill chapter notes. Why do we fall ill chapter notes. 1 2. Why do we fall ill chapter notes. 1 2 3. Cbse class 9 science why do we fall ill? mcqs. Acquired diseases which develop after birth. Why do we fall ill chapter notes. 1 2 3 4 5 6 7 8 9. Why do we fall ill chapter notes. 1 2 3 4. Protozoan malaria, kala azar. Why do we fall ill cbse class 9 ix science. Class 9th social science chapter. Why do we fall ill? lecture 2. Why do we fall ill chapter notes. 1 2 3 4 5 6 7 8 9. We all have had the experience of sitting near someone suffering from a cold and catching it ourselves. obviously, the more crowded our living conditions. Worms cause intestinal diseases as well as 7. Literature reader class 9th ncer. Modern indian education system.


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