Campbell Biology in Focus
Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 41, Problem 3TYU
Summary Introduction

Introduction:

As per the bottom-up model, an ecosystem’s structure is controlled by the producers and supply of nutrients. The top-down model is also called as the trophic cascade.

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