Question 9 • AZ-Earth and Space Science A (SC301)
A star’s final stages depend on its mass: massive stars and low-mass stars follow different paths. Stars also change and eventually die when they use up the fuel for nuclear fusion in their cores. As a star begins leaving its stable stage, its core contracts, while its outer layers generally expand—so C and D are incorrect. Only some very massive stars can leave behind black holes, not all stars.
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