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How many years ago did large amounts of oxygen gas first appear on Earth's atmosphere?
Wiki User
∙ 10y ago
After plants developed chlorophyll and multiplied to the point where they could "pollute" the primal atmosphere, somewhere between 1 and 2 billion years ago.
Wiki User
∙ 12y ago
Wiki User
∙ 7y ago2.3 billion years ago
Cyanobacteria began photosynthesizing and transforming the atmosphere's CO2 back into oxygen.
Wiki User
∙ 12y agogo to the museum and u will find out dud
Wiki User
∙ 12y ago2.7 billion years ago
Wiki User
∙ 11y ago2 billion years ago
Wiki User
∙ 10y ago2.5 billion
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What are the top three elements in the earths atmosphere?
Oxygen, hydrogen & Argon.In order, large percentages of Nitrogen, Oxygen followed by trace amounts of Argon are the most abundant elements in the earth's atmosphere.
If Earths biosphere were younger we would have oxygen in the atmosphere?
Earths atmosphere dose have oxygen in it, without it we would all be dead we require oxygen to breathe.
What are the substances that the earths atmosphere contains?
oxygen
Two most abundant gases in earths atmosphere presently?
78% nitrogen and 21% oxygen and other gasses make up the last 1% Earth science
What essentials for life are found in earths atmosphere?
The Earths atmosphere protects the earth from meteors and it tgives us oxygen
20of earths atmosphere is composed of?
nitrogen,oxygen,carbon dioxide,argon, and other gases in small amounts
What are the top three elements in the earths atmosphere?
Oxygen, hydrogen & Argon.In order, large percentages of Nitrogen, Oxygen followed by trace amounts of Argon are the most abundant elements in the earth's atmosphere.
Where is argon found in nature?
it is found in airair is made up of oxygen hydrogen, nitrogen, and small amounts of argon.in earths atmosphere
If Earths biosphere were younger we would have oxygen in the atmosphere?
Earths atmosphere dose have oxygen in it, without it we would all be dead we require oxygen to breathe.
How much of the earths atmosphere is made up of nitrogen and oxygen?
The earths atmosphere is made up of 78% nitrogen and 21% oxygen
Is most of the earths atmosphere covered with oxygen?
no
What percent of earths atmosphere is oxygen?
97%
What are the substances that the earths atmosphere contains?
oxygen
Was there oxygen in the early earths atmosphere?
yes
What type of gases is in earths atmosphere?
Atmosphere contains roughly (by volume) 78.09% nitrogen, 20.95%oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
Two most abundant gases in earths atmosphere presently?
78% nitrogen and 21% oxygen and other gasses make up the last 1% Earth science
What essentials for life are found in earths atmosphere?
The Earths atmosphere protects the earth from meteors and it tgives us oxygen
