We don’t breathe out with much force, and even if we did, we immediately inhale. So, how do we not just inhale what we just exhaled?
In: 14
You do. Some of it at least. You are exhaling way less CO2 than you likely think.
When you inhale, you’re taking in 78% nitrogen, 21% oxygen, 0.04% CO2.
You exhale 78% nitrogen, 17% oxygen, 4% CO2, and the rest various gasses.
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