Our body develops disease-fighting ability through its immune system. It gets stronger with good food, sleep, exercise and vaccines. Past infections and vaccinations help the body remember and fight germs better next time. Class 8 NCERT Science Curiosity Chapter 3 Health: ...
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Vaccines prepare our body to fight infections without making us sick. They protect people of all ages from deadly diseases. Vaccines also stop diseases from spreading in the community, saving millions of lives. Class 8 NCERT Science Curiosity Chapter 3 Health: ...
Air Quality Index (AQI) shows how clean or polluted the air is. It uses numbers and colors to warn us about air pollution levels and helps people take steps to protect their health. Class 8 Science Curiosity Grade 8 Chapter 3 ...
Yes, fast food harms pets. It contains salt, oil and spices not suited for animals. Eating such food can cause obesity, vomiting and digestive issues in pets. They need specially made pet food. Class 8 Science Curiosity Chapter 3 Health: The ...
Wave-like movement in the food pipe is caused by coordinated contraction and relaxation of muscle cells. This peristaltic motion pushes food steadily toward the stomach. Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye NCERT solutions Class ...