Multiple Choice
Why is hydrogen burning the main energy source for main-sequence stars?
A) Hydrogen is the most common element in stars.
B) Hydrogen nuclei have the smallest positive charge.
C) Hydrogen burning is the most efficient of all fusion or fission reactions.
D) Hydrogen can fuse at temperatures lower than other elements.
E) All these are valid reasons.
Correct Answer:
Verified
Correct Answer:
Verified
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