Biology 2010 Student Edition

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

Chapter 16, Darwin's Theory of Evolution - Standardized Test Prep - Page 479: 11



Work Step by Step

The short, strong beak is an adaptation because this type of beak is ideal for cracking open hard seeds that the large ground finch finds in its habitat. These types of beaks increase the fitness of these finches during times of drought when the only food source may be seeds.
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