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Author Question: __________ years ago, the earth was divided into two continents, Gondwanaland and Laurasia. a. 50 ... (Read 52 times)

jjjetplane

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on: Jul 10, 2018
__________ years ago, the earth was divided into two continents, Gondwanaland and Laurasia.
 
  a. 50 million
  b. 200 million
  c. 2 billion
  d. 3.5 million years ago

Question 2

Crystalline materials that have been buried in sediments may be chronometrically dated using the __________method.
 
  a. electron spin resonance
  b. stratigraphic
  c. optically stimulated luminescence
  d. none of these


chevyboi1976

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Reply #1 on: Jul 10, 2018
Answer to Question 1

Answer b

Answer to Question 2

Answer c


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