C1 last min Revsion 0.0 / 5 ? ChemistryThe earth and its atmosphereGCSEEdexcel Created by: crazyguy351Created on: 23-03-17 18:52 Evolution of the Atmosphere There was a lot of CO2 and no oxygen Oceans formed when water vapour condensed 1 of 3 Green Plants A lot of CO2 dissolved into the atmosphere Green plants removed the CO2 and produced O2 by photosynthesise 2 of 3 The Ozone layer The build up of oxygen killed off early life forms This allowed complex organisms to exist like humans 3 of 3
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