Question

why is a respiratory system necessary?​

Answer 1

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Your respiratory system is the network of organs and tissues that help you breathe. This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood. Common problems include allergies, diseases or infections.

Answer 2

Explanation:

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 allows 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.