Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 58 - The Biosphere - Review Questions - Understand: 8

Answer

C.

Work Step by Step

A point source needs to have a very specific, narrowly-defined input to an ecosystem (C.). The other answer choices are too diffuse to meet this definition.
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