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The atmosphere is 79.9% oxygen.
The moon has no oxygen because it has no atmosphere.
Yes, trees do provide most of our oxygen for the atmosphere
Plants gives us most of our oxygen in the atmosphere.
when a balloon floats up into the atmosphere it pops because a balloon need oxygen and there is no oxygen in the atmosphere
Oxygen came before Eukaryotes and this is known due to the fact that Eukaryotes need oxygen to live.
Life came first. The oxygen in Earth's atmosphere is a product of living organisms carrying out photosynthesis.
Anaerobic came first, because there was no oxygen in the Earth's original atmosphere.
Oxygen when came in contact with UV broke down. It then reacted with more oxygen to form ozone.
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.
The atmosphere is 79.9% oxygen.
21% of the atmosphere is 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.
The moon has no oxygen because it has no atmosphere.
Nitrogen displaces oxygen that originally came from Earth's atmosphere. In the absence of oxygen, steel can not rust.
Yes, oxygen makes up 20.9% of the atmosphere.