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4.14: Mass Extinctions

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

extinction

Dying out of a species so that no members of the species exist anymore.

mass extinction

Dying out of a large number of species within a relatively short period of time, usually due to major catastrophes.

Pangaea

Supercontinent of all the major land masses.

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Difficulty Level:
At Grade
Grades:
7 , 8
Date Created:
Nov 29, 2012
Last Modified:
Aug 30, 2016
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