Atmosphere Homework


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  • Volcanoes gave off Carbon Dioxide (CO2) and Water Vapour into the Earths atmosphere.
  • The Earths cooled therefore creating the oceans.
  • Tiny bacteria like organisms began to evolve in the oceans and photosynthesize creating oxygen.
  • Animals evolved in the ocean and on land to breathe oxygen. That over time rose. As nobody was there nobody really knows what they looked like.
  • Dead organisms fell to the bottom of the oceans and were buried underneath layers upon layers of sedimentary rocks which over time form fossils.
  • Todays atmosphere is made up of: 78% Nitrogen 21% Oxygen 0.9% Argon 0.04% Carbon Dioxide And traces of other gases.
  • By Cameron Bassett
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