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: 13

Answer

b.

Work Step by Step

Feathers are a distinct characteristic of birds. No other group of animals possesses feathers.
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