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Author Question: When the universe originated, it was composed of 100 ____________________ and ____________________, ... (Read 137 times)

Chloeellawright

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When the universe originated, it was composed of 100 ___________________ _ and
  ___________________ _, but now consists of ___________________ _ hydrogen and 2
  ___________________ _ elements. Fill in the blank(s) with the appropriate word(s).



Question 2

When the universe originated, it was composed of 100 ___________________ _ and
  ___________________ _, but now consists of ___________________ _ hydrogen and 2
  ___________________ _ elements. Fill in the blank(s) with the appropriate word(s).




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EAN94

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Answer to Question 1

hydrogen, helium, 98, other

Answer to Question 2

greenhouse gases





 

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