What key characteristic marks the beginning stages of the collapse of a star?
a. The increase in temperature
b. The depletion of carbon and oxygen
c. The depletion of hydrogen
d. The expulsion of energy
ANS: C
The lack of hydrogen in a star marks its death. The rapid compression of the core then causes the
internal temperature to increase. In turn, this allows for the formation of heavy metal atoms.
Information can be found in the section Stars and Seas
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