What are the most common elements composing Earth?
A) hydrogen and helium
B) carbon and nitrogen
C) oxygen and silicon
D) uranium and plutonium
Correct Answer:
Verified
Q8: What is the geometric shape of Earth?
A)
Q9: Rocks that include silicon and oxygen as
Q10: What is a silicate?
A) rocks that include
Q11: What is olivine?
A) silicate rock that makes
Q12: The Moon has an average density of
Q14: The outer core of Earth extends out
Q15: From the center outward, the correct order
Q16: The most abundant element in Earth's core
Q17: After an earthquake, an S-type seismic wave
Q18: The interior layer just below the crust
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