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carbon dioxide

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Q: Before photosynthesis evolved was oxygen rare in Earth's atmosphere?
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Related questions

What was the earths atmosphere before photosynthesis?

Without life because when plants do photosynthesis, they produce oxygen.


What was Earths atmosphere before photosynthesis?

It was like a cow in water, and a dove giving birth...


Earths atmosphere was first changed by?

photosynthesis


How would earths atmosphere be different if organisms capable of photosynthesis not evolved?

It will remain as reductive atmosphere. Ther will be only gases like NH3, H2 , H2S. H2O. There would be no life


What process adds oxygen to earths atmosphere?

Photosynthesis


Earths early atmosphere was changed dramatically by the evolution of?

photosynthesis


What added oxygen to earths early atmosphere?

Photosynthesis by plants


What component of the earths atmosphere exists as a result of photosynthesis?

Photosynthesis converts carbon dioxide into oxygen. Therefore, much of the oxygen in our atmosphere is present due to photosynthesis.


What gas was not found in earths early atmosphere but was produced by photosynthesis?

Carbon dioxide


What is main cause of earths atmosphere changing over time to support life?

Green plants evolved adding oxygen to the atmosphere.


What was the importance of photosynthesis in the evolution of the earths atmosphere?

the most important, the conversion of Carbon Di-oxide to Oxygen!


What is the name of a shooting star before it enters the earths atmosphere?

The correct name for a shooting star is a Meteorite. Before a meteorite enters the Earths atmosphere it is called a Meteoroid.