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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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salsathief salsathief
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6 years ago

The presumed causes for transgressions and regressions of shallow seas during the Paleozoic
  were
  a. greenhouse effect and glaciation.
  b. tectonic activity and continental rifting.
  c. glaciation and tectonic events.
  d. bolide impact and glaciation.
  e. none of the above
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Avi c.Avi c.
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6 years ago
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salsathief Author
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6 years ago
Thanks for your help!!
Brownr40
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Yesterday
Brilliant ツ
Loruiz15
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2 hours ago
Good timing, thanks!
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