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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
What percentage of all matter ejected into the interstellar medium in our Galaxy each year by stars is contributed by planetary nebulae?
   A)  Less than 1%    B)  About 50%    C)  Between 10 and 20%    D)  Almost 100%
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Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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staedtler Author
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7 years ago
I really appreciate your help!
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