chemistry 0.0 / 5 ? ScienceChemistryGCSEEdexcel Created by: nabilaCreated on: 28-05-13 16:36 gases that were present in the early atmosphere *nitrogen, water vapour, carbon dioxide 1 of 5 what caused the gases to occur in the early atmosphere volcanoes 2 of 5 what gases are present now *carbon dioxide, oxygen, nitrogen, argon 3 of 5 how much carbon dioxide, oxygen, nitroge & argon are in the atmosphere carbon dioxide= 0.04%, oxygen= 21%, nitrogen=78%, argon=1% 4 of 5 what happened to the water vapour when the earth cooled down water vapour condensed and formed oceans 5 of 5
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