20.8 percent
The percentage of oxygen in inhaled air by humans is approximately 21%. This oxygen is then absorbed by the lungs and transported by the blood to the cells where it is used for energy production in the body.
Around 21% of the air you breathe is oxygen.
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.
Approximately 21% of the air we breathe is made up of oxygen.
78% Nitrogen 20.5% Oxygen .5% Argon 1% Others for small calculations we take percentage of oxygen in air as 21%
The percentage of oxygen in inhaled air by humans is approximately 21%. This oxygen is then absorbed by the lungs and transported by the blood to the cells where it is used for energy production in the body.
Around 16% of the air you breathe out is oxygen. This percentage decreases from the 21% of oxygen in the air you inhale due to the exchange of gases that occurs during respiration.
About 21% of inspired air is oxygen.
Room air is about 21% oxygen.
oxygen percentage in air is 20%
Around 21% of the air you breathe is oxygen.
Air contains about 19-20% oxygen
21%oxygen
As altitude increases, the percentage of oxygen in the air decreases. This is because the air becomes thinner at higher altitudes, leading to lower oxygen concentrations.
About 21%
About 21%.
About 18%