Answer
Lighter elements moved to the surface and heavier elements sank to the core.
Work Step by Step
Due to the buoyancy force, lighter elements moved up to the surface, and heavier elements moved down to the core.
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
Chapter 8 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page 290: 1
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