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staedtler staedtler
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7 years ago
Which stars undergo a helium flash in their cores?
A)   All stars of less than 2 solar masses   C)   All stars of more than 2 solar masses
B)   All stars that contain helium   D)   All stars that have become red giants
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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7 years ago
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staedtler Author
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7 years ago
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