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yncr yncr
wrote...
6 years ago
Permafrost is ________.
 
  A) A surface snow layer that does not melt in the summer
  B) A subsurface layer of soil and water that does not thaw
  C) An Arctic weather pattern that does not get above freezing
  D) A region where planting is not possible because of yearlong morning frost
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wrote...
6 years ago
B
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