Answer
b.
Work Step by Step
The first eukaryotes appeared on Earth more than a billion years ago. They were unicellular. Today, protists are classified as eukaryotes that do not belong to the fungi, plant, or animal kingdoms.
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 21, Protists and Fungi - Assessment - 21.2 Protist Classification - Understand Key Concepts/Think Critically - Page 628: 2
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