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The most of the oxygen in the Earth's atmosphere today comes from photosynthesis by plants and other photosynthetic organisms. They convert carbon dioxide into oxygen as a byproduct, which accounts for approximately 20.95% of the atmosphere.

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1y ago

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Related Questions

What is oxygen most commonly found in?

Oxygen is most commonly found in the air of Earths atmosphere.


What has the most oxygen in it?

The oxygen molecule, the form of oxygen found in the Earth's atmosphere, is 100% oxygen. There fore it is the material that has the most oxygen in it.


What is the second most abundant gas found in the atmosphere?

The second most abundant gas in the Earth's atmosphere is oxygen, which makes up about 21% of the gases in the atmosphere.


What layer of atmosphere holds oxygen in earth?

the layer of the atmosphere that holds oxygen is the troposphere and its pause is tropopause


What two most common gasses are found in the atmosphere layers?

The two most common gases found in Earth's atmosphere are nitrogen (N2) and oxygen (O2). Nitrogen makes up about 78% of the atmosphere, while oxygen makes up about 21%.


What process provides most of the oxygen found in earths atmosphere?

Growing more trees as trees take in carbon dioxide and releases oxygen that we use for breathing. So. I guess Afforestation provides most of the oxygen found in the earths atmosphere.


Is the trophospere the layer of the atmosphere where most nitrogen and oxygen found in?

Yes, the troposphere is the layer of the atmosphere closest to the Earth's surface, and it is where most of the Earth's nitrogen and oxygen are found. This is the layer where weather occurs and where most life on Earth exists.


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%.


Which process provides most of the oxygen found in the Earth atmosphere?

Photosynthesis is the process that provides most of the oxygen found in the Earth's atmosphere. Through this process, plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using sunlight energy.


The two most abundant gases in the atmosphere are?

Nitrogen and oxygen are the two most abundant gases in Earth's atmosphere, making up approximately 99% of its composition. Nitrogen comprises about 78% of the atmosphere, while oxygen makes up around 21%.


What is the most common element found in earths atmosphere?

Nitrogen is the most common element found in Earth's atmosphere, making up about 78% of the air we breathe. Oxygen is the next most abundant element in Earth's atmosphere, making up about 21%.


The element oxygen is found in the earth?

Yes, oxygen is one of the most abundant elements on Earth, comprising about 21% of the atmosphere. It is also found in water, rocks, and minerals.