Multiple Choice
The composition of matter in the universe can be summarized by which statement?
A) All but 2% of the mass of the universe is hydrogen and helium.
B) All but 2% of the mass of the universe is hydrogen.
C) Two percent of the mass of the universe is hydrogen and helium. The rest is of heavier elements.
D) About half of the mass of the universe is in the form of rocks, molecules, and planetary material.
Correct Answer:
Verified
Correct Answer:
Verified
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