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Author Question: Terrestrial planets, like Earth, are made up of rock and metal. a. True b. False Indicate ... (Read 73 times)

tfester

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on: Jul 27, 2018
Terrestrial planets, like Earth, are made up of rock and metal.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

Molecular clouds are mapped using _____ gas instead of the most-abundant hydrogen because itradiates at radio wavelengths more efficiently.
 
  a. oxygen III
 b. oxygen II
 c. helium II
 d. carbon monoxide
  e. carbon dioxide


kristenb95

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Reply #1 on: Jul 27, 2018
Answer to Question 1

True

Answer to Question 2

d


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