Early volcanic atmosphere

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  • volcanoes give off gasses like water vapour, nitrogen, methane and ammonia.
  • The earth cools and steam condensed and formed oceans.
  • CO2
  • CO2
  • CO2 dissolves in oceans then concentrates into shells.
  • CO2
  • Nitrogen
  • Ammonia
  • Nitrogen
  • Ammonia reacts with oxygen, and then denitrifies bacteria in the soil to make nitrogen
  • Nitrogen
  • The first organisms are thought to have developed by volcanoes in oceans, there the organisms developed into simple plants.
  • The plants that developed increased in number, and with them giving off CO2, the amount of CO2 increased.
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