Oceanic crust is generated at ________.
A) hot spots on the sea floor,like Iceland
B) spreading ridges
C) convergent plate margins
D) transform plate margins
Correct Answer:
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Q23: The _ refers to the sum total
Q24: The Oort cloud is _.
A)an unusual type
Q25: The asthenosphere is actually a part of
Q26: In correct order from the center outward,Earth
Q27: Comets are made up primarily of _.
A)iron-nickel
Q29: The _ is the thinnest layer of
Q30: Continental shields and platforms represent _.
A)sites where
Q31: The composition of the earth's inner core
Q32: Soil belongs to the _.
A)hydrosphere
B)atmosphere
C)geosphere
D)biosphere
E)All of the
Q33: Convergent plate boundaries are _.
A)sites where cold,downgoing
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