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Author Question: The separation between Africa and Arabia is a(n) ____________________ valley. Fill in the ... (Read 34 times)

daltonest1984

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The separation between Africa and Arabia is a(n) ___________________ _ valley.
 
  Fill in the blank(s) with correct word

Question 2

What distance methods is used to calibrate the Hubble constant?
 
  a. Parallax
  b. Supernova observations
  c. variable stars
  d. both a and b
  e. both b and c



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Joy Chen

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Answer to Question 1

rift

Answer to Question 2

E




daltonest1984

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it


Kedrick2014

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Reply 3 on: Yesterday
Gracias!

 

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