The Evolution of Life
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Questions and Answers

Which event led to the accumulation of free oxygen in the atmosphere?

  • Events of the existence of the Universe Macromolecules
  • The Great Oxygenation Event (correct)
  • Oldest fossils of prokaryotes
  • O2 begins to accumulate in the atmosphere
  • What caused the Ordovician-Silurian mass extinction?

  • A gamma-ray burst from a hypernova (correct)
  • Events of the existence of the Universe Macromolecules
  • O2 begins to accumulate in the atmosphere
  • The Great Oxygenation Event
  • What event resulted in the killing of 96% of marine and 70% of land species?

  • The Cretaceous-Paleogene extinction event
  • The Great Dying (correct)
  • The Great Oxygenation Event
  • The Ordovician-Silurian mass extinction
  • Which organisms were responsible for the accumulation of free oxygen in the atmosphere?

    <p>Prokaryotes</p> Signup and view all the answers

    When did the first vertebrates - fishes appear?

    <p>450-440 MYA</p> Signup and view all the answers

    Which event caused the accumulation of free oxygen in the atmosphere?

    <p>The Great Oxygenation Event (GOE)</p> Signup and view all the answers

    What is the estimated time of the Ordovician-Silurian mass extinction?

    <p>450-440 million years ago</p> Signup and view all the answers

    Which event resulted in the highest percentage of species extinction?

    <p>The &quot;Great Dying&quot; Permian-Triassic extinction event</p> Signup and view all the answers

    When did the first vertebrates (fishes) appear?

    <p>450-440 million years ago</p> Signup and view all the answers

    What caused the accumulation of oxygen in the atmosphere during the Great Oxygenation Event?

    <p>Photosynthesis by cyanobacteria</p> Signup and view all the answers

    Study Notes

    Oxygenation of the Atmosphere

    • The Great Oxygenation Event led to the accumulation of free oxygen in the atmosphere.
    • This event was caused by the activities of oxygen-producing cyanobacteria.

    Mass Extinctions

    • The Ordovician-Silurian mass extinction was caused by an unknown event.
    • This extinction event occurred around 443-485 million years ago.
    • It resulted in the killing of 96% of marine and 70% of land species.
    • The Permian-Triassic extinction event resulted in the highest percentage of species extinction, with 96% of marine and 70% of land species wiped out.

    Evolution of Vertebrates

    • The first vertebrates, fishes, appeared around 530 million years ago.

    Notable Facts

    • The Great Oxygenation Event, which occurred around 2.7 billion years ago, was responsible for the accumulation of free oxygen in the atmosphere.
    • This event had a significant impact on the evolution of life on Earth.

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    Description

    Test your knowledge on the major events that shaped the existence of the Universe and the development of life on Earth. From the appearance of macromolecules to the Great Oxygenation Event, this quiz covers key milestones in the history of our planet. Challenge yourself and discover fascinating facts about the evolution of life as we know it.

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