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Author Question: The main constituent of the Martian atmosphere is: A) hydrogen. B) helium. C) methane. D) ... (Read 53 times)

MGLQZ

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on: Jul 27, 2018
The main constituent of the Martian atmosphere is:
 
  A) hydrogen.
  B) helium.
  C) methane.
  D) carbon dioxide.
  E) nitrogen.

Question 2

Of the terrestrial planets, Mars seems to most promising to exobiologists.
 
  Indicate whether the statement is true or false


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steff9894

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

D

Answer to Question 2

TRUE


MGLQZ

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Reply 2 on: Jul 27, 2018
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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