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riveraes riveraes
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6 years ago
What forms heavy elements such as gold, mercury, and uranium?
 A) A protostar
  B) Condensation
  C) A supernova
  D) A solar nebula
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ecarvallo1ecarvallo1
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6 years ago
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riveraes Author
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6 years ago
You make an excellent tutor!
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Yesterday
Thank you, thank you, thank you!
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2 hours ago
Just got PERFECT on my quiz
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