Day 7 powerpoint time on a clock

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Day 7 powerpoint time on a clock

  1. 1. History of the Earth In a single day. Courtesy: NASA / Goddard Space Flight Center
  2. 2. 12.00 to 4.00am • No life • A planet with poisonous gases in the air, no soil and a hot sea.
  3. 3. 4.00am to 8.00pm Single celled organisms, called stromatolites, begin to produce oxygen.
  4. 4. Just before 8.30pm • First marine plants
  5. 5. 8.50pm • Jellyfish and simple diblastic organisms
  6. 6. Just after 9.00pm • Trilobites and creatures of the Burgess Shale
  7. 7. 10.00pm • Plant life of the carboniferous and the first land creatures.
  8. 8. 11.00pm to 11.45pm Reign of the Reptiles – Dinosaurs Rule!
  9. 9. 1 minute and 17 seconds to midnight First humans appear.

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