Question

Distinctions between Earth’s crust and mantle are based on:
a. rock types
b. chemistry
c. seismicity
d. all of the above

Answer 1

Answer:

D. All of the above

Explanation:

This is the correct answer because you'd have to experiment to find out more about the Earth's crut and mantle and all these options prove just that :)

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Answer 2

The answer is D. All of the above