Question

true or false The air that we breathe out is rich in oxygen​

Answer 1

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Answer:

false

Explanation:

We breathe in oxygen and some of this carbon dioxide. When we exhale, we breathe out less oxygen but more carbon dioxide than we inhale. The carbon dioxide is dissolved in the blood, carried to the lungs by the circulation, and breathed out.

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Answer 2

Given statement is false.

• The breathed out air is rich in carbon dioxide and deficient in oxygen. As the respiratory activities result in release of carbon dioxide after utilising oxygen, the former needs to be removed from body.
• So, we breathe out carbon dioxide and take in oxygen from the atmosphere produced by photosynthesis performed by plants.