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.
Biology (11th Edition)
by Raven, Peter; Johnson, George; Mason, Kenneth; Losos, Jonathan; Singer, Susan
Published by
McGraw-Hill Education
ISBN 10:
1259188132
ISBN 13:
978-1-25918-813-8
Chapter 58 - The Biosphere - Review Questions - Understand - Page 1258: 8
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