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gi.x3 gi.x3
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6 years ago

Which concept describes early Earth as separated into layers by gravity, with each deeper layer denser than the layer
  above?
  a. Centrifugal force
  b. Density stratification
  c. Continental drift
  d. Tectonic theory
  e. Seismic theory

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skalassskalass
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6 years ago
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