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How does oxygen turn into carbon dioxide in the body?

Answer 1

It changes in the cells

About 20% of the air enters our lungs, where oxygen diffuses into the blood and is carried by red blood cells throughout the body. There, it diffuses into a cell, where it is used for respiration—a process that is necessary for all living things—creating the bi-product of CO2, which is then diffused back into the blood and carried by red blood cells back into the lungs, where it is exhaled.

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Answer 2

Julian Aguilar

During cellular respiration, oxygen is used to break down glucose, producing carbon dioxide as a byproduct in the process.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.