Environmental Science for AP* (2nd Edition)

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

Chapter 8 - Module 24 - Mineral Resources and Geology - AP Review Questions - Page 273: 1

Answer

" The Core".

Work Step by Step

It is the innermost layer of planet earth, and it is composed primary of Iron and Nickel. This is because through the geological time Iron and Nickel, which are heavier elements, sank down and formed the core.
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