Answer the following in 15-20 sentences (5*10=50) 1. What is food? OR What is air?
2. What is water? OR What is acid?
3. Explain the journey of cotton. OR Explain the journey of Jute
4. What are the five layers of atmosphere? Explain. OR what are the different types of color blindness?
5. What is matter? define it and divide it. OR what is universe? define it and divide it.
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