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Origins

Exercise and reference answers

Questions
  1. Question
    Chemical evolution formed
    Choices
    1. planets
    2. biomolecules
    3. galaxies
    Correct choice
    biomolecules
  2. Question
    It preceded the appearance of
    Choices
    1. the earth
    2. the sun
    3. cellular life
    Correct choice
    cellular life
  3. Question
    Homology suggests
    Choices
    1. common ancestry
    2. separate origins
    3. no relationship
    Correct choice
    common ancestry

Explanation

Chemical evolution before cellular life. Source: syllabus Biology, Evolution.
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