Which of the following statements is true of stars?
A) They die when they exhaust their fuel, allowing gravity to take control.
B) The energy generated through nuclear fusion keeps their interiors cool.
C) They avoid collapsing by balancing gravity through low pressures.
D) The generation of energy from nuclear fusion prevents stars from resisting their own gravity.
Question 2
A__________is a supernova explosion caused by the collapse of a massive star.
A) type II supernova
B) type I supernova
C) type Ia supernova
D) type III supernova
Evolution of Stars Off the Main Sequence
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