Earth's Microbiome Study Notes
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Questions and Answers

Where are microorganisms found?

  • Only in humans
  • Across the Earth, including Bacteria, Archaea and Eukaryotes (correct)
  • Only in extreme environments
  • Only in soil and water
  • What is the estimated number of microbial species on Earth?

  • Ten million
  • One billion
  • One million (correct)
  • One hundred thousand
  • What do microorganisms obtain from their surroundings?

  • Energy and resources (correct)
  • Only resources
  • Only food
  • Only energy
  • What role do microorganisms play in natural environments?

    <p>They drive chemical reactions and obtain energy and resources</p> Signup and view all the answers

    What proportion of microbial species on Earth are pathogenic?

    <p>A small fraction of them</p> Signup and view all the answers

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