In: Other
 ans-polar; rotated ~90o counterclockwise from present link is here which shows perfectly movement of plates https://www.youtube.com/watch?v=UwWWuttntio  | 
 Ans-b. Appalachian  | 
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 3. The Martinsburg Formation represents sediment derived from mountains formed during the _____ Orogeny. Ans- b. Appalachian  | 
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 4. Which group of organism represents about 50% of the fossils found in Cambrian rocks? Ans-d. trilobites  | 
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 5.What modern group of organisms is most likely related to archaeocyathids? Ans-c. corals  |