Environmental Science for AP* (2nd Edition)

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

Unit 2 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page 180: 6

Answer

A

Work Step by Step

Nitrogen fixation is what we humans use to produce fertilizer. By doing so, we allow NO3- to become more readily available for plants to use.
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