Biology: The Unity and Diversity of Life
Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 39, Problem 4SQ

A bird's keratin-lined _______ helps it grind up food.

  1. a. pharynx
  2. b. crop
  3. c. gizzard
  4. d. gastrovascular cavity
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