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Q.

Which of the following option/s does air help us to do?

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a

Combustion

b

Photosynthesis

c

Movement of mills to generate electricity

d

All of these

answer is D.

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Detailed Solution

Air helps in combustion, photosynthesis and movement of mills to generate electricity.
Here, Combustion is the process of burning a substance in the presence of oxygen in the air and releasing energy in the form of heat. Photosynthesis is the process by which plants prepare food with the help of carbon dioxide, sunlight, water and minerals. And air also helps in generating electricity by rotating the windmills. The moving air turns the blade of windmills to run mills and draws water from tube wells by running pumps.

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Which of the following option/s does air help us to do?