Antibiotic resistance happens when bacteria become strong and stop responding to antibiotics. It makes infections harder to treat and more dangerous. Overuse or misuse of antibiotics is the main reason for this problem. class 8 science chapter 3 health the ultimate ...
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Cold and flu, typhoid and chickenpox are communicable diseases. They spread from person to person. Asthma and diabetes are non-communicable diseases. They do not spread and are caused by lifestyle or body conditions. Class 8 Science Curiosity Chapter 3 Health: The ...
Communicable diseases spread through harmful microbes called pathogens—bacteria, viruses, fungi or protozoa. These pathogens enter our body through air, water, food or contact and cause illnesses like cold, flu, typhoid or measles. Class 8 NCERT Science Curiosity Chapter 3 Health: The ...