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Tomtit [17]
3 years ago
12

What is 99.9 percent of the air we breathe?

Biology
2 answers:
saw5 [17]3 years ago
8 0
I believe most of what we breathe is nitrogen and oxygen. There are small amounts of other gases as well, but the air we breathe is primarily made up of oxygen and nitrogen.
MrMuchimi3 years ago
3 0
Oxygen i think
hope this helps
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