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What is the approximate percent of oxygen by volume present in earths lower atmosphere?
The approximate percent of oxygen in Earth's lower atmosphere is around 20.95% by volume.
How much percent oxygen present in your atmosphere?
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%.
What is the approximate percent of oxygen by volume present earths lower atmosphere?
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
WHAT IS THEAPPROXIMANT PERCENT OF OXYGEN BY VOLUME PRESENT IN EARTHS LOWER ATMOSPHERE?
The approximate percentage of oxygen in Earth's lower atmosphere is around 21% by volume.
What percent of the atmosphere is oxygen'?
21% of the atmosphere is oxygen.
Which gas forms 21 percent of the Earth's atmosphere?
Oxygen forms 21 percent of the Earth's atmosphere.
What gas is 21 percent of the Earth's atmosphere?
Oxygen is the gas that makes up about 21 percent of the Earth's atmosphere.
What is the mass percent of oxygen?
The mass percent of oxygen is approximately 21% in Earth's atmosphere.
What is the amount of oxygen in the atmosphere?
Air is 20.5 percent oxygen.
What is 99 percent of the atmosphere is made up of either oxygen or?
Nitrogen. Oxygen makes up approximately 21% of the Earth's atmosphere, while nitrogen makes up about 78%. Together, they account for the vast majority of the gases present in the atmosphere.
What percentage of oxygen is present in the Earth's atmosphere?
About 21 of the Earth's atmosphere is made up of oxygen.
Describe how did oxygen come to make up to 21 percent of earths present atmosphere?
Oxygen accumulates in Earth's atmosphere from photosynthesis, where plants and algae convert carbon dioxide into oxygen. This process started with the emergence of photosynthetic organisms around 2.5 billion years ago, gradually increasing oxygen levels to the current 21 percent.
