Question

why air have oxygen and carbon - dioxide ?​

Answer 1

Answer:

The cells in our bodies need oxygen to stay alive. Carbon dioxide is made in our bodies as cells do their jobs. The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out.

Explanation:

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Answer 2

Answer:

Air plays a very important role in the survival of living things. Air is defined as a mixture of different gases. It is also known as atmosphere. Air is made up of different gases which include nitrogen, carbon dioxide, oxygen and many other gases in small amounts.

Explanation:

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