Answer
A controlled experiment is one where two different groups, one of controlled is tested parallel with another uncontrolled experiment to examine the differences between them.
Work Step by Step
b
Campbell Biology (12th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Published by
Pearson
ISBN 10:
0135188741
ISBN 13:
978-0-13518-874-3
Chapter 1 - Test Your Understanding - Levels 1-2 - Remembering/Understanding - Page 26: 4
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