they consume 20-25 % of all oxygen used by the body at rest
Oxygen - yes. Air - no. Not much of that around underwater.
1/4
25%
Oxygen keeps animals alive, Nitrogen is not much use.
Portable oxygen concentrators are energy efficient and use as much electricity as a television. Most portable oxygen concentrators can run 4 hours on battery life alone.
why do you want to know that
90
We do not use 100% of the Oxygen we inhale. we use only around 20% of it. Birds are more efficient and can absorb around 40% of their intake.
It burns the oxygen. r
To test oxygen content in a canned product, you should use an oxygen absorber packet. This can tell you (not exact) how much oxygen is in something, like a package.
somr people may say not much but that's a lie hospital use pure oxygen for life support you can breathe in pure oxygen for 12 years strait and not die
Most people use millimeters to measure kidney stones.