40 percent
the percentage of oxygen in the atmosphere today is about 20.95%. Or... if you round it you get the most common answer of 21%.
21% of the atmosphere is oxygen.
Air is 20.5 percent oxygen.
97%
no
The Earth
There is no indication at present that the concentration of oxygen in the atmosphere is declining.
The atmosphere consists of about 20%, Nitrogen being the main component at over 70%
Oxygen composes of twenty-one percent of Earth's Atmosphere.
Mars' atmosphere contains 0.13% oxygen. Over 95% of the atmosphere on Mars is carbon dioxide.
In the atmosphere and, bonded with oxygen, in quartz.
Yes. There is one planet with oxygen in its atmosphere: our home planet Earth.