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Author Question: The canals of Mars were eventually found to be crustal faults. Indicate whether the statement is ... (Read 36 times)

D2AR0N

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on: Jul 27, 2018
The canals of Mars were eventually found to be crustal faults.
 
  Indicate whether the statement is true or false

Question 2

How do astronomers know that the nuclei of some galaxies are active?
 
  a. Their nuclei are much brighter than expected.
  b. The orbits of stars near the center of the galactic nuclei are faster than expected.
  c. The luminosity of the nuclei varies over time.
  d. The color of the nuclei is different than expected.


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cpetit11

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

F

Answer to Question 2

C


D2AR0N

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Reply #2 on: Jul 27, 2018
TY


cpetit11

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Reply #3 on: Jul 27, 2018
You're welcome


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