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Astronomy
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Stellar Populations and Metallicity
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Astronomy
AST.220 Stellar Populations and Metallicity
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Which comparison correctly distinguishes Population I from Population II?
A
Population I: metal-rich disk stars; Population II: old metal-poor halo stars
B
Population I: no hydrogen; Population II: no helium
C
Population I: first metal-free stars; Population II: modern spiral-arm stars
D
Population I: only planets; Population II: only nebulae
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