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Author Question: The Precambrian basement rocks of Ohio became part of the North American continent A) more than ... (Read 72 times)

s.tung

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on: Jul 16, 2018
The Precambrian basement rocks of Ohio became part of the North American continent
 
  A) more than 2.5 billion years ago.
  B) 1.9 billion years ago.
  C) 1.8 to 1.9 billion years ago.
  D) 1.7 to 1.8 billion years ago.
  E) about 1.1 billion years ago.

Question 2

How fast do mountains rise?
 
  A) 3 to 10 mm per year
  B) 1 to 10 cm per year
  C) 1.5 cm per year
  D) As fast as finger nail growth.


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essyface1

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: E

Answer to Question 2

Answer: A


s.tung

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Reply 2 on: Jul 16, 2018
Excellent

kswal303

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Reply 3 on: Yesterday
Gracias!

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