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QiTian QiTian
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Posts: 506
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6 years ago
Continental shields are areas of:
 a. organic sedimentary rocks.
  b. pyroclastics.
  c. limestone.
  d. basalt.
  e. ancient crystalline rocks.
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SeitaSeita
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Posts: 371
6 years ago
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Thanks for the assistance/chance to let me help!

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QiTian Author
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6 years ago
this is exactly what I needed
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Yesterday
Thanks for your help!!
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2 hours ago
Smart ... Thanks!
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