Viruses reproduce only inside host cells (bacteria, plants, or animals). Common ailments like cold, flu, cough, and serious diseases like polio and chickenpox are caused by viruses. NCERT Class 8 Science Chapter 2 Microorganisms: Friend and Foe
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Farmers use jute bags, metallic bins, silos, and granaries for storage. Neem leaves are used at home, while large godowns may require specific chemical treatments. NCERT Class 8 Science Chapter 1 Crop Production and Management
Drying harvested grains reduces moisture, preventing spoilage and attacks by insects, bacteria, and fungi, ensuring the grains remain fit for use and germination. NCERT Class 8 Science Chapter 1 Crop Production and Management
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