Author Question: The cosmic microwave background radiation was emitted during a time when ____ was the important ... (Read 68 times)

sjones

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The cosmic microwave background radiation was emitted during a time when ____ was the important process in the Universe.
 
  a. recombination
 b. ionization
 c. fusion
 d. antiproton production
  e. positron production

Question 2

Consider the complete magnetic cycle of sunspot activity on the Sun. Approximately how many years is this cycle?
 
  a. 100 years
  b. 11 years
 c. 7 years
 d. 40 years
 e. 22 years



tuwy

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Answer to Question 1

a

Answer to Question 2

e



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