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kow [346]
3 years ago
10

(Easy, 50 points!) Us humans breathe (A Oxygen (B Carbon Dioxide (C Carbon Monoxide (D Nothing

Health
2 answers:
Crazy boy [7]3 years ago
5 0
A becuaase you breathe in oxygen and you release carbon dioxide.
slavikrds [6]3 years ago
3 0
We breathe in a mixture of the first two actually. The air is composed of 78% nitrogen, 21% oxygen, 0.03% carbon dioxide and 0.07% of other gases. Technically, you can also breathe in carbon monoxide if it is present within your environment. However, it has harmful effects. It can<span> enter your bloodstream and mix with hemoglobin </span><span>to form carboxyhemoglobin. The </span>blood<span> cannot carry oxygen anymore, and this causes the body's cells and tissue to die.</span>
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