Question

why air is necessary
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Answer 1

Answer:

Air plays a vital role in recycling one of Earth's most important substances: carbon. ... Animals and humans also release carbon dioxide into the air when they breathe. Through a process called photosynthesis, plants extract carbon dioxide from the air and use it to produce energy.

Explanation:

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Answer 2

AIr is necessary to breathe ...

People need to breathe, and so do lots of other animals—and plants! Breathing is part of a process called respiration. During respiration, a living thing takes in oxygen from the air and gives out carbon dioxide.....