Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 57 - Ecosystems - 57.2 - Energy and Nutrients in Ecosystems Are First Captured by Primary Producers - 57.2 Recap - Learning Outcomes - Page 1233: 2

Answer

During the process of turnover, nutrients from the bottom of lakes is exchanged with oxygen from the surface via convection. This cycle occurs in Fall and Spring and allow materials to be evenly dispersed throughout the lake.

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