– If humans breathe in oxygen and exhale CO2, then why does mouth-to-mouth resuscitation work?

Question

– If humans breathe in oxygen and exhale CO2, then why does mouth-to-mouth resuscitation work?

In: 172

Answer 1

We don’t “breathe in oxygen and exhale CO2”, we “breath in air that’s relatively rich in oxygen and breath out air that has slightly less oxygen and little more CO2.”