Question

Why do we need to breathe out CO2?

Answer 1

Answer:

we need to breathe out CO2 because it is not required in our body and if you are not going to excel CO2 then the function of our body is not going to be performed well we are going to face numerous problems and the person and the being who are not removing CO2 will die after sometime

Answer 2

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High levels of carbon dioxide in the body can be toxic and hence, carbon dioxide needs to be removed. It is brought to the lungs by blood and then removed when we exhale.