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The Evolution of Microbial Life
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The Evolution of Microbial Life

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Questions and Answers

What is the estimated age of Earth based on the data from slowly decaying radioactive isotopes?

  • 3.5 billion years ago
  • 4.5 billion years ago (correct)
  • 6 billion years ago
  • 2 billion years ago

    • What process gave rise to the first cellular life?

  • Osmosis
  • Endosymbiosis (correct)
  • Photosynthesis
  • Fermentation

    • What materials created the disc-shaped nebular cloud from which our star, the Sun, was formed?

  • Dust and gases released from a supernova (correct)
  • Volcanic eruptions
  • Meteorite impacts
  • Chemical reactions in the atmosphere

    • What did the Sun undergo that led to the release of large amounts of heat and light?

    <p>Nuclear fusion</p> Signup and view all the answers

    What process caused the leftovers in the nebular cloud to start clumping and fusing?

    <p>Gravitation and collisions</p> Signup and view all the answers

    What is the estimated age of Earth based on the data from slowly decaying radioactive isotopes?

    <p>4.5 billion years</p> Signup and view all the answers

    What process gave rise to the third evolutionary lineage, Eukarya?

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

    What process led to the release of large amounts of heat and light by the Sun?

    <p>Nuclear fusion</p> Signup and view all the answers

    What materials created the disc-shaped nebular cloud from which our star, the Sun, was formed?

    <p>Dust and gases</p> Signup and view all the answers

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