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Questions and Answers

According to David Christian, what is Earth's most important source of energy?

  • The sun (correct)
  • The moon
  • The stars
  • The oceans
  • What is the Milky Way?

  • A type of mountain range
  • A type of galaxy (correct)
  • A type of candy bar
  • A type of river
  • What are some of the questions that David Christian poses in the text?

  • Why is Earth the only planet with life?
  • Why are humans the most intelligent species?
  • Why is the Milky Way the only galaxy in the Universe?
  • Why are stars so big? (correct)
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