No, not all diseases are caused by infections. Some diseases are caused by poor lifestyle, bad eating habits, pollution or lack of nutrients. These are called non-communicable diseases, like diabetes or anaemia. class 8 science chapter 3 health the ultimate treasure ...
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NCERT Solutions and important questions for Class 8 science for CBSE 2020-2021.
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Communicable diseases spread through air, water, food, insects or contact. We can prevent them by maintaining hygiene, washing hands, using clean water, getting vaccinated and covering our mouth while sneezing or coughing. class 8 science chapter 3 health the ultimate treasure ...
Such campaigns in my area include the Swachh Bharat Abhiyan. People were encouraged to build toilets and keep surroundings clean. This reduced diseases, especially among children and improved hygiene awareness in the community. Class 8 Science Curiosity Chapter 3 Health: The ...
Some people fall sick more often because their immune system is weak. Poor diet, stress, lack of sleep or existing health conditions make them more likely to catch infections, even in the same surroundings. Class 8 Science Curiosity Chapter 3 Health: ...
Immunity is the body’s ability to fight harmful germs and diseases. It helps protect us from infections. A strong immune system keeps us healthy and prevents illnesses from spreading or becoming serious. Class 8 Science Curiosity Chapter 3 Health: The Ultimate ...