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Saturated percentage of oxygen (SpO2) is a measurement of oxygen levels in the blood
The percentage of oxygen in the atmosphere is 20.75%. The atmosphere has many other elements that we breathe in besides oxygen. Oxygen needs to be present for life on earth.
Brain cells start to die
78% Nitrogen 20.5% Oxygen .5% Argon 1% Others for small calculations we take percentage of oxygen in air as 21%
25%
20%
Isaac Newton use his brain to its maximum level he use his brain to 110 %
A dolphin uses about 20 percent of the brain.
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25%
2 hours
we all living beings use all of (nearly all of) our brain, i.e. approx. 100% of our brain.
we all living beings use all of (nearly all of) our brain, i.e. approx. 100% of our brain.
About 20%.
3%
No, of course not, like humans, animals have a percentage of their brain, no matter how small, that they don't use.