Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 22 - The Origin of Species - Review Questions - Understand - Page 458: 11

Answer

A.

Work Step by Step

A. is true, as at the Cretaceous/Tertiary boundary: species diversity has varied widely, contradicting B.-D. Note that C. and D. essentially say the same thing in different ways.
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