Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 53 - 53.4 - Concept Check: 1

Answer

The spring fed river.

Work Step by Step

Semelparity is favored in environments where offspring and/or parents have reduced odds of survival, which would be seen in the unpredictable second scenario. The predictable, less variable conditions of the spring fed river favor offspring and parent survival, which in turn favors iteroparity.
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