c1-The evolution of the atmosphere 0.0 / 5 ? ChemistryThe limestone cycleGCSEOCR Created by: NaanaCreated on: 23-09-13 15:29 What was the earth’s atmosphere originally? Hot molten 1 of 6 What gases did the volcanoes give off? Water vapour, carbon dioxide and nitrogen 2 of 6 What was the early atmosphere made off? Mostly carbon dioxide and water vapour with very little oxygen 3 of 6 What did the green plants do after they evolved? They removed carbon dioxide from the air and produced oxygen by photosynthesis 4 of 6 What happened to the carbon in the plants when the plant died? The carbon became insoluble carbonates and fossil fuels 5 of 6 What did the build up of oxygen in the atmosphere cause? It caused complex organisms to evolve 6 of 6
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