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monica
Updated: 3/12/2020
monica
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Storyboard Text

  • Earths Formation
  • Date of event:4.6 billion years ago
  • Early Life On Earth
  • 4 - bya
  • Oldest stromatolites from cyanobacteria
  • Stromatolites are layered bio chemicals that form and used to lived in shallow water environments.
  • Stromatolites
  • Banded iron formations - 3 bya
  • Banded iron formations are rocks of sediment and they are usually older than 1.7 billion years ago.
  • Multicellular life- 600 million years ago
  • Multicellular life - are organisms that contain multiple different cells.
  • Cambrian explosion - 541 mya
  • 541 million years ago, the explosion lasted for 13---25 million years ago.
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