Earth's core is made up primarily of
A) iron.
B) lead.
C) oxygen.
D) silicon.
Correct Answer:
Verified
Q6: On average,Earth's lithosphere is approximately _ km
Q7: The motion of a flowing material in
Q8: Ninety percent of Earth is made up
Q9: Earth exchanges _ with the rest of
Q10: Which of the following makes up the
Q12: Which of the following statements about the
Q13: According to the principle of uniformitarianism,
A)geologic processes
Q14: What powers Earth's external heat engine?
A)gravitational energy
B)radioactive
Q15: How old is Earth?
A)approximately 4.5 thousand years
B)approximately
Q16: In which of the following subsystems is
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