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Type: Multiple-Choice
Category: Historical Geology
Level: Grade 8
Score: 2
Tags: evolution
Author: mrsbateacher
Last Modified: a month ago

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Historical Geology Question

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Grade 8 Historical Geology

Geological time periods are divided by                                                .
  1. the appearance and disappearance of life forms.
  2. an equal number of years.
  3. the amount of sediment.
  4. solar changes.
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