Question

2. The component of air is used by green plants to make their food is carbon dioxide.
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Answer 1

Answer:

The oxygen in air is used by the organisms present in air, water or soil or on earth for their respiration. During respiration carbon dioxide gas is released to air. But green plants during photosynthesis use carbon dioxide of air for preparing food and they release oxygen gas in the air.

Answer 2

Yes.

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Edit : Thanx for marking brainliest.