The atmosphere today is about 21% oxygen. In former times it was different percentages. In dinosaur days, it was closer to 30%, which was a factor in animals growing as big as they did.
21% of the atmosphere is oxygen.
The atmosphere is 79.9% oxygen.
the environment which has the availability of oxygen it is called aerobic atmosphere and if the availability of oxygen is not there in atmosphere then it is anaerobic type We live in a aerobic atmosphere which has the oxygen available
No, there is no oxygen in Mercury's atmosphere because Mercury does not have an atmosphere.
About 21% of the Earth's atmosphere is oxygen.
Plankton gives more oxygen to the atmosphere.
Animals remove oxygen from the atmosphere.
Yes, oxygen makes up 20.9% of the atmosphere.
Cyanobacteria make molecular oxygen in our atmosphere.
Earth's atmosphere is about 21% oxygen by volume (for dry air).
No it isn't. We still have about 21% oxygen content in the atmosphere.
About 21% of the Earth's atmosphere is composed of oxygen.