Earth: An Introduction to Physical Geology (12th Edition)

Published by Pearson
ISBN 10: 0134074254
ISBN 13: 978-0-13407-425-2

Chapter 1 - Section 1.1 - Geology: The Science of Earth - Graphics 1.1 - Page 7: 1

Answer

The percentage or fraction of geological timescale that is represented by the recorded history of human kind is .000001%

Work Step by Step

The length of recorded history for mankind is 5000 years. The age of earth rounded up is 5 billion years. Divide history by age.
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