Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 26, Animal Evolution and Diversity - Assessment - 26.2 Chordate Evolution and Diversity - Understand Key Concepts/Think Critically - Page 776: 12

Answer

a.

Work Step by Step

The end of the Cretaceous Period saw the end of the dinosaurs. Several natural disasters led to the demise of the dinosaurs: worldwide volcanic eruptions, an asteroid collision on the Yucatan Peninsular, and a fall in sea levels.
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