Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 39 - Self-Quiz - Page 704: 4

Answer

c. gizzard

Work Step by Step

Birds have gizzards that are lined with hardened glycoproteins that help to mechanically break down hard foods such as seeds.
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