ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
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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