Environmental Science for AP* (2nd Edition)

Published by W. H. Freeman
ISBN 10: 1464108684
ISBN 13: 978-1-46410-868-6

Unit 6 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page 474: 20

Answer

A

Work Step by Step

This is because (i) regulates the electrical energy that is used in correlation with its availability. If electric energy is not in adequate supply, there will be shortages.
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