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Where did scientists intentionally get information to develop the geologic time scale

User Lamp Ard
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Answer:

The answer would be C. for you.

Step-by-step explanation:

User Ian Muir
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Scientists got information for the geologic time scale by studying rock layers and index fossils worldwide.With this information, scientists placed Earth's rock layers in order by relative age. Later, radioactive dating helped determine the absolute age of the divisions in the geologic time scale.
User Rhenz
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