The heaviest element produced by nuclear fusion in a young star is______ .
A) sodium
B) nickel
C) iron
D) helium
E) oxygen
Correct Answer:
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Q2: Through repeated collisions, planetesimals grew into eight_
Q3: The _ means "the Sun in the
Q4: The largest of the stars are denoted
Q5: Early Earth was hot because _.
A) a
Q6: The Goldilocks scenario suggests that _.
A) we
Q8: What would have happened if Earth were
Q9: Why is the mass of Earth important
Q10: Why is it important that we have
Q11: As they formed, due to their high
Q12: Earth formed approximately_ years ago.
A) 4,600,000,000
B) 33,200,000,000,000
C)
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