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Rock Cycle Comic Strip

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Текст на Статията

  • 4.5 billion of years ago the atmosphere was primarily composed of Hydrogen and Helium.
  • The oxygen levels were about 15 percent to around 19 percent.
  • At this time dinosaurs breathed air that was far higher in oxygen than ours and lived in far more flammable woods and grasslands than we do.
  • Carbon dioxide levels in the atmosphere during the ice age were extremely low, at around 180 parts per million.
  • For awhile I hanged out here with the atmosphere that is filled with 21 % oxygen and 0.04% carbon dioxide.
  • At this time I met people which aren't very nice sometimes because they kick me around.
  • Nowadays the carbon dioxide in the atmosphere is rising and is surprisingly half way to unsafe levels for humans
  • After being washed down to the ocean, I got broken down into tiny rocks in the sand. If only humans would stop burning fossil fuels and start using green energy so carbon dioxide levels could decrease.
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