Environmental Science for AP* (2nd Edition)

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

Chapter 8 - Module 25 - Weathering and Soil Science - AP Review Questions - Page 286: 3


Correct order of soil horizons: O horizon A horizon E horizon B horizon C horizon

Work Step by Step

The O horizon is the first soil horizon and contains mostly organic material that is alive or in the process of being broken down. The next horizon is the A horizon, also known as topsoil. The next one is the E horizon, also know as the zone of leaching. Then the B horizon which is mostly composed of mineral material. Then finally the C horizon which is similar to the parent material of the soil.
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