jowebb0127 jowebb0127
  • 03-11-2021
  • Physics
contestada

Index Fossils can help scientists determine the age of a rock layer because they are present in every rock layer since the beginning of life on Earth.

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evanbevry
evanbevry evanbevry
  • 08-11-2021

Answer:

They were only present during a short time frame, so it helps to narrow down the age of the rock layer.  

Explanation: hope this helps :)

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