Biology (11th Edition)

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

Chapter 56 - Community Ecology - Review Questions - Understand: 2

Answer

A./C.

Work Step by Step

The back of the textbook says that A. is the correct answer, which could be the case if the similar realized niches were not exactly the same; one species could shift its realized niche and both could coexist, like the case of the coexisting Paramecium species (p. 1191). Much more likely is C. There is not reason for B. to occur, and D. is wrong, based on the Paramecium example already mentioned.
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