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    Horizons Exploring the Universe
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    Exam 20: Astrobiology: Life on Other Worlds
  5. Question
    -What Life Form First Appeared on Earth at the 0
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-What Life Form First Appeared on Earth at the 0

Question 55

Question 55

Multiple Choice

  -What life form first appeared on Earth at the 0 mark in the timeline above  A) dinosaurs B) microbial C) mammals D) humans
-What life form first appeared on Earth at the 0 mark in the timeline above


A) dinosaurs
B) microbial
C) mammals
D) humans

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