'Largest mass extinction' presentation slideshows

CHAPTER 14 HISTORY OF THE EARTH

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Earth History: Geologic Time

Earth History: Geologic Time. Geologic Time. Geologic Time: It is very, very long. Earth is estimated to be around 4.6 billion years old based on the rock and fossil record. Geologic time is broken up into sections based on major changes in Earth . . Divisions of Geologic Time.

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The accelerating loss of species

The accelerating loss of species. The Sixth Extinction. Mass Extinctions. A mass Extinction is: - When at least half of all species (including animals and plants) die within a relatively short time. We know these extinction occurred -Through the fossil record

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