Essentials of Geology, Books a la Carte Edition (13th Edition)
Essentials of Geology, Books a la Carte Edition (13th Edition)
13th Edition
ISBN: 9780134609942
Author: Frederick K. Lutgens, Edward J. Tarbuck, Dennis G. Tasa
Publisher: PEARSON
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Chapter 18, Problem 8GST

a)

To determine

The percentage of geologic time as represented by recorded history by assuming 5000 years for the length of recorded history.

b)

To determine

The percentage of geologic time as represented by the ancestors given hominins has been around for about 5 million years.

c)

To determine

The percentage of geologic time as represented by the abundant fossil evidence given that the first abundant fossil evidence for multicellular organisms does not appear until the beginning of the Cambrian period (540 million years ago).

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