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Author Question: The atmosphere of Titan is composed mostly of A) oxygen. B) methane. C) carbon dioxide. D) ... (Read 89 times)

notis

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on: Jul 27, 2018
The atmosphere of Titan is composed mostly of
 
  A) oxygen.
  B) methane.
  C) carbon dioxide.
  D) hydrogen.
  E) nitrogen.

Question 2

What is the typical main sequence lifetime of an M-type star?
 
  A) one million years
  B) ten million years
  C) one billion years
  D) ten billion years
  E) a trillion years


pikon

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

E

Answer to Question 2

E


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