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Stars of Different Spectral Classes,O,B,A,F,G,K,M,show Differences in the Strengths of Absorption

Question 2

Multiple Choice

Stars of different spectral classes,O,B,A,F,G,K,M,show differences in the strengths of absorption lines of various elements.These differences are due to differences in


A) The chemical compositions of stars
B) The surface temperatures of stars
C) Stellar distances
D) Stellar ages

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