Environmental Science for AP* (2nd Edition)

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

Chapter 1 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions: 8

Answer

B

Work Step by Step

It is 20 percent because per capita grain production can be represented by 50/250.
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