Of the elements in Earthʹs crusts,_______makes up the most of Earthʹs crust by weight.
A) oxygen (O)
B) silicon (Si)
C) Aluminum (Al)
D) Iron (Fe)
Correct Answer:
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Q18: The scientific study of rock strata (layers)is
Q19: The Precambrian Eon encompasses what percentage of
Q20: Earthʹs magnetic poles
A)are fixed.
B)are perfectly aligned with
Q21: Continental crust is basically _,whereas oceanic crust
Q22: The transition zone from the upper mantle
Q24: Earthʹs interior is layered because
A)materials became sorted
Q25: The density of material below the Moho
Q26: The percentage of oxygen is the crusts
Q27: The fact that Earthʹs interior is sorted
Q28: Which of the following is CORRECT?
A)Continental crust
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