2006-07-14 08:23:30 · 3 answers · asked by tayler_07 2 in Beauty & Style ➔ Skin & Body
In a nutshell...CO2 is the driving force behind each breath we take when the lungs fill up with O2 the lungs filter it leaving behind the CO2. A message is sent thru the autonomic nervous system instructing our brain to exhale...then inhale...and repeat.. The atmospheric air is composed of about 21% Oxygen that we need as well as other elements such as Nitrogen and Carbon that make up the rest. Have a fun weekend!
2006-07-14 08:27:38 · answer #1 · answered by ♥ jojo ♥ 4 · 1⤊ 0⤋
Your diaphram is located under your lungs and it flexes down pulling air into and pushing air out of your lungs.
2006-07-14 15:26:38 · answer #2 · answered by Roger C 2 · 0⤊ 0⤋
Through thier nose and mouth-lmao!!!!!!!!!!!!!
2006-07-14 15:26:58 · answer #3 · answered by Anonymous · 0⤊ 0⤋