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hermiz hermiz
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6 years ago
O-type stars
A) have lifetimes long enough for advanced life to evolve
B) have lifetimes long enough for planets to form and for life to appear, but not long enough for advanced life
C) do not contain enough heavy elements to form planets
D) have lifetimes too short for planet formation
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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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6 years ago
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hermiz Author
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6 years ago
Smart ... Thanks!
noodlelicker
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Yesterday
Thanks
SlimyPencil
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2 hours ago
This helped my grade so much Perfect
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