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15 June, 13:42

What two gases probably dominated precambrian earth's atmosphere?

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  1. 15 June, 14:10
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    I think these gases are water vapor and nitrogen. As the temperature rises, these water vapor molecules, would condense and form the oceans we have. Also, it was said that in the early atmosphere, nitrogen is very abundant and even today the composition of air is 79% by volume.
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