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Author Question: What is the average thickness of the oceanic crust? A) 0 km B) 3 km C) 7 km D) 20 ... (Read 43 times)

jeatrice

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on: Jul 16, 2018
What is the average thickness of the oceanic crust?
 
  A) 0 km
  B) 3 km
  C) 7 km
  D) 20 km

Question 2

The oceanic crust is composed almost entirely of ________ rocks that are underlain by ________ rocks, which makes up the lithospheric mantle.
 
  A) felsic; sediments
  B) intermediate; felsic
  C) sedimentary; mafic
  D) mafic; ultramafic


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ms_sulzle

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

Answer: C

Answer to Question 2

Answer: D


jeatrice

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Reply 2 on: Jul 16, 2018
Gracias!

nguyenhoanhat

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Reply 3 on: Yesterday
Excellent

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