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Author Question: Which element would not have been found in Earth's early atmosphere? What is the most abundant gas ... (Read 74 times)

LCritchfi

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Which element would not have been found in Earth's early atmosphere? What is the most abundant gas found in Earth's atmosphere today?
 
  a. nitrogen (N2)
 b. carbon dioxide (CO2)
  c. helium (He)
 d. hydrogen (H)
 e. oxygen (O2)

Question 2

Astronomers can determine the interiors of main sequence stars by _____.
 
  a. studying their atmospheres
 b. creating stellar models
 c. detailed observations of the Sun
 d. using the Hertzsprung-Russell Stellar Model (HRSM)
  e. satellite observations of the closest stars



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jgranad15

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Answer to Question 1

a

Answer to Question 2

b





 

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