Answer
b. Observable
Work Step by Step
Science can only investigate the things we can see and the changes we can observe. It cannot create experiments on things or concepts we cannot see.
Biology: The Unity and Diversity of Life (14th Edition)
by Starr, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Published by
Brooks/Cole Publishing Co.
ISBN 10:
1305073959
ISBN 13:
978-1-30507-395-1
Chapter 1 - Self-Quiz - Page 21: 14
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