Reference Entry


in Berkshire Encyclopedia of World History

Second edition

Published by Berkshire Publishing Group

Published in print January 2010 | ISBN: 9781933782652
Published online August 2016 | e-ISBN: 9780190622718

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Extinctions have occurred throughout the history of the Earth; extinction is in fact a critical component in the theory of evolution and is attributed to natural selection, random factors, or catastrophic events. The Earth has survived five mass extinctions—including one that destroyed the dinosaurs—all of which have shaped the world as we know it today.

Reference Entry.  3068 words.  Illustrated.

Subjects: History

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