Biology 2010 Student Edition

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

Chapter 29, Animal Behavior - Standardized Test Prep - Page 857: 9

Answer

(d)

Work Step by Step

There is a positive correlation between the number of songs of males and their attractiveness to the female birds.
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