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symbo symbo
wrote...
Posts: 1970
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7 years ago
What are the stars in the upper part of the instability strip called?
   A)  Protostars    B)  T Tauri stars    C)  RR Lyrae variables    D)  Cepheid variables
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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symbo Author
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7 years ago
It's correct Smiling Face with Open Mouth
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