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Author Question: The two most common elements found in Earth's crust are: a. silicon and magnesium. b. sodium and ... (Read 92 times)

sam.t96

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on: Aug 7, 2018
The two most common elements found in Earth's crust are:
 a. silicon and magnesium.
  b. sodium and carbon.
  c. silicon and aluminum.
  d. silicon and oxygen.
  e. sodium and potassium.

Question 2

The Mohorovicic discontinuity:
 a. marks the boundary between Earth's crust and mantle.
  b. has been reached by drilling in the Gulf of Mexico.
  c. separates Earth's inner core from the outer core.
  d. indicates a change in rock type from basalt to granite.
  e. indicates a change in rock type from igneous to sedimentary.


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CharlieArnold

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Reply #1 on: Aug 7, 2018
Answer to Question 1

D

Answer to Question 2

A


sam.t96

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Reply 2 on: Aug 7, 2018
Gracias!

abro1885

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Reply 3 on: Yesterday
Excellent

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