Chapter 9

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Author:
jarolett
ID:
267363
Filename:
Chapter 9
Updated:
2014-03-21 15:02:13
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Chapter
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Chapter 9
Description:
Chapter 9
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  1. Geologic Columm
    An ordered arrangement of rock layers that is based on the relative ages of the rocks and the the bottom layers are older.
  2. eras
    Unit of geologic time that has two periods.
  3. Period
    Unit of geologic time that is longer than an epoch but shorter than a era.
  4. Epoch
    A subdivision of geologic time that is longer than a age but shorter than a period.
  5. Evolution
    Process of change by which new species develop from preexisting species over time.

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