India is one of the world’s biggest vaccine producers. It supplies vaccines to many countries and played a major role during the COVID-19 pandemic by providing affordable and effective vaccines to millions. Class 8 NCERT Science Curiosity Chapter 3 Health: The ...
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Yes, breathing becomes difficult in smoky or dusty areas. My chest feels tight and I start coughing. It’s uncomfortable and shows how polluted air can badly affect our health and breathing system. Class 8 Science Curiosity Grade 8 Chapter 3 Health ...
Single-celled organisms are tiny living beings made of just one cell. They include bacteria, protozoa and some algae. They perform all life functions within one cell and can be helpful or harmful. Class 8 Science Curiosity Chapter 3 Health: The Ultimate ...