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doit_the_clown doit_the_clown
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7 years ago
Which of the following stars are metal-poor?
A)   Open-cluster stars   C)   Population II stars
B)   Very young stars   D)   Population I stars
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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7 years ago
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doit_the_clown Author
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7 years ago
Smart ... Thanks!
ouasfoudgewu
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Yesterday
Correct Slight Smile TY
Mcb
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2 hours ago
Helped a lot
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