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hermiz hermiz
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7 years ago
Stars spend most of their lives
A) fusing hydrogen into helium in their cores
B) slowly dimming as they die with no fusion occurring in their cores
C) as slowly brightening protostars
D) fusing helium into carbon in their cores
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Life in the Universe

Life in the Universe


Edition: 4th
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Life in the Universe, 4/E (Bennett, Shostak)
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19Clyde19Clyde
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7 years ago
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hermiz Author
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7 years ago
this is exactly what I needed
terriroberts96
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Yesterday
Thanks
cipcal
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2 hours ago
Helped a lot
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