daneisy28vargas daneisy28vargas
  • 09-03-2018
  • Biology
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Scientists used major changes in life forms in the fossil record to from the geologic thin scale

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emmaacarrier
emmaacarrier emmaacarrier
  • 09-03-2018
There are all sorts of ways to reconstruct the history of life on Earth. Pinning down when specific events occurred is often tricky, though. For this, biologists depend mainly on dating the rocks in which fossils are found, and by looking at the “molecular clocks” in the DNA of living organisms.
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