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Earth's atmosphere is about 21% oxygen by volume (for dry air).
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.
Nitgrogen forms 80% of the Earth's atmosphere and oxygen 21%
My atmosphere is the same as your atmosphere since we all live on the same planet. Oxygen makes up about 19.5% of the atmosphere.
About 20% is inhaled I believe
Earth's atmosphere is about 21% oxygen by volume (for dry air).
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.
Carbon dioxide is increasing in the atmosphere, and oxygen is decreasing.
28%
Nitgrogen forms 80% of the Earth's atmosphere and oxygen 21%
oxygen
roughly 21 percent.
21 %
My atmosphere is the same as your atmosphere since we all live on the same planet. Oxygen makes up about 19.5% of the atmosphere.
Nitrogen and oxygen make up the largest percentage of the atmosphere.
The highest percentage in the Earth's atmosphere is nitrogen, at 78%. Then oxygen(21%) and CO2, 0.9%.
About 20% is inhaled I believe