Answer
(c)
Work Step by Step
The answer is " synergistic interactions with other contaminants" because this answer is most difficult to quantify when examining the possibility of human risk.
The answer is (c).
Environmental Science for AP* (2nd Edition)
by Friedland, Andrew J.; Relyea, Rick
Published by
W. H. Freeman
ISBN 10:
1464108684
ISBN 13:
978-1-46410-868-6
Unit 7 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page 625: 20
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