Author Question: The precise time of the onset of El Nio varies, but averages every ________ years. A) 100 B) ... (Read 23 times)

tichca

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The precise time of the onset of El Nio varies, but averages every ________ years.
 
  A) 100
  B) 50-60
  C) 30-40
  D) 20-30
  E) 2-7

Question 2

Which of the following takes place in cycles much longer than the time taken by an El Nio event?
 
  A) Arctic oscillation
  B) North Atlantic oscillation
  C) Pacific decadal oscillation
  D) La Nia
  E) The greenhouse effect


tuwy

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Answer to Question 1

Answer: E

Answer to Question 2

Answer: C



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