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Home Q & A Board Biology-Related Homework Help General Biology
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Nudee88 Nudee88
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6 years ago
Life probably originated during which geologic time?
 
  a. Archaean
  b. Cenozoic
  c. Mesozoic
  d. Carboniferous
  e. Pennsylvanian

Question 2

Radiometric dating of the most ancient fossils uses the
 
  a. dating volcanic rocks above and below the fossil-containing layer of sedimentary rock.
  b. ratio of carbon 14 to carbon 12 in a sample of the fossil.
  c. counting of the rings of trees found with the fossils.
  d. comparison of unknown fossils with fossils of known age.
  e. transmission of radio waves through the fossil.
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sosobonsosobon
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6 years ago
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Nudee88 Author
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#2
6 years ago
All correct!
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#3
6 years ago
Happy to help
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