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Q: Where did oxygen in the atmosphere came from?
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Which came first Eukaryotes or oxygen Accumulation in the Atmosphere?

Oxygen came before Eukaryotes and this is known due to the fact that Eukaryotes need oxygen to live.


What came first oxygen or life?

Life came first. The oxygen in Earth's atmosphere is a product of living organisms carrying out photosynthesis.


Which came first anaerobic or aerobic?

Anaerobic came first, because there was no oxygen in the Earth's original atmosphere.


Where did the oxygen and ozone in your atmosphere come from according to this theory?

Oxygen when came in contact with UV broke down. It then reacted with more oxygen to form ozone.


How did earth come have an oxygen atmosphere?

Early organisms created oxygen from other gases in the atmosphere. More specifically, the methane atmosphere on Earth was supplanted by oxygen generated by microorganisms in the oceans. Today, the vast majority of our oxygen comes from the ocean - mainly plants. Earth came to have a oxygen atmostphere because that is the way God invisoned it, so thats how he made it.


What is the oxygen content of the atmosphere?

The atmosphere is 79.9% oxygen.


What percent of the atmosphere is oxygen'?

21% of the atmosphere is oxygen.


What is an aerobic atmosphere?

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


Is there oxygen in Mercury?

No, there is no oxygen in Mercury's atmosphere because Mercury does not have an atmosphere.


Why doesnt the moon have oxygen?

The moon has no oxygen because it has no atmosphere.


What is the benefit to pumping nitrogen gas into seawater that is stored in steel tanks?

Nitrogen displaces oxygen that originally came from Earth's atmosphere. In the absence of oxygen, steel can not rust.


Is the atmosphere partly oxygen?

Yes, oxygen makes up 20.9% of the atmosphere.