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Home Q & A Board Science-Related Homework Help Physics Astronomy
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adreamer adreamer
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6 years ago
What proportion of their lives do stars spend fusing hydrogen to helium in their cores?
A) 90%
B) 70%
C) 50%
D) 10%
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
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DonskoyDonskoy
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6 years ago
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adreamer Author
wrote...

6 years ago
Good timing, thanks!
avance37
wrote...

Yesterday
Thank you, thank you, thank you!
Jose^2
wrote...

2 hours ago
Brilliant ツ
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