Answer
External fertilization requires water or at least moisture to be successful; otherwise sperm would not be able to swim to the eggs and fertilize them.
Work Step by Step
As above
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 28, Animal Systems II - 28.3 - Reproduction - 28.3 Assessment - Page 826: 2b
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