Water (H2O) would have much of the hydrogen and oxygen in the body.
Each human body has a different about of oxygen in it. A male weighing about 148 pounds has 65% oxygen.
Oxygen makes up about 65% of the human body by mass.
A lot
25%
I don't know how much of the body's oxygen the brain needs, but when the brain does not receive enough, a stroke occurs.
because without oxygen you cant breathe.
65%
they consume 20-25 % of all oxygen used by the body at rest
Too much air would harm the body
Our body obtain oxygen to our body by breathing.
The brain utilizes about 20% of the body's oxygen supply, even though it makes up only about 2% of the body's weight. Oxygen is crucial for the brain to produce energy and maintain its various functions.