How is the geologic time scale divided?
- ?Lv 72 months ago
Into eons, eras, periods, epochs and ages,.
Originally this was done on the basis of fossils, but now radioisotope dating methods are often used to give more accurate ages. Carbon 14 has too short a half life.
- Anonymous2 months ago
- Bill-MLv 72 months ago
By Fossil Evidence.
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