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The Origins of Life on Earth Quiz
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The Origins of Life on Earth Quiz

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Questions and Answers

When did the earliest known life forms on Earth originate?

  • 4.28 billion years ago
  • 4.5 billion years ago
  • 3.77 billion years ago
  • 3.42 billion years ago (correct)

    • Where is the earliest direct evidence of life on Earth found?

  • Australian Apex chert rocks (correct)
  • Ocean floor sediments
  • Siberian permafrost
  • Hydrothermal vents

    • What is the extent of Earth's biosphere into the atmosphere?

  • At least 76 km (47 mi) (correct)
  • Up to 50 km (31 mi)
  • At least 100 km (62 mi)
  • Up to 30 km (18 mi)

    • How old are the oceans on Earth?

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

    What is debated about the microfossils found in Australian Apex chert rocks?

    <p>Their validity</p> Signup and view all the answers

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