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MBD-AIR AROUND US-EXAMPLE
- What is air ?
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- Name two main gases of air.
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- What is simple composition of air?
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- Why is there rich amount of carbon dioxide near the surface of earth ?
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- What is smoke ?
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- What is atmosphere?
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- What is transpiration ?
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- What is wind - indicator ?
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- Which gas is used for combustion ?
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- Which gas we release during breathing ?
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- Which gas is used by plants for photosynthesis ?
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- Which gas is released by plants during photosynthesis ?
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- Why are tall chimneys recommended for factories?
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- What is wind ?
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- Describe a wind mili and give its functions?
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- Give one use of wind mill.
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- Which things helps birds to fly ?
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- How can you feel air ?
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- What is winnowing ? Where is it used ?
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- How will you show that an empty glass bottle is filled with air ?
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