Which gas is essential for human respiration?
Correct answer: Oxygen
MattEE
Ahhh, I can breathe easy now...🤭👋
Som
We also need Co2 as a stimulus to take in oxygen and nitrogen is a component of air
BOB
If there was no nitrogen the oxygen levels would increase so much it would be poisonous
Giggle Pig
In my case it’s methane.🫤
Player#Honey
The pumping of oxygen is very important