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hermiz hermiz
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6 years ago
A- and F-type stars
A) do not contain enough heavy elements to form planets
B) have lifetimes long enough for advanced life to evolve
C) have lifetimes too short for planet formation
D) have lifetimes long enough for planets to form and for simple life to appear, but not long enough for advanced life to develop
Textbook 
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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DonskoyDonskoy
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6 years ago
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hermiz Author
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6 years ago
Correct Slight Smile TY
kevin12323h
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Thanks for your help!!
jmelchor77
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You make an excellent tutor!
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