The start of life

The start of life
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  • There is a theory that the universe was created by the Big Bang and this geologic time scale will give you a idea about how things went down
  • Then the Earth was formed and it was what is known as the precambrian era thre was volcanos and fire everywhere many kinds of igneous, metamorphic, and sedimentary rock was formed during this time
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  • And then an atmosphere formed around the earth and after that a ozone layer formed
  • Now humans inhabit the earth in what is known as the cenozoic era
  • After millions of years a supercontinent named pangea formed
  • After millions of years photosynthesis began and life started
  • The first living lifeform is cyanobacteria
  • All kinds of creatures lived on pangea you can tell how many fossils there are by looking at the fossil record
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  • But then something called the continental drift happened and pangea broke apart and formed plate boundaries
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