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how soil forms

chapter 2 lesson 2 : how soil forms

TermDefinition
soil the loose, weathered material on earth's surface in which plants can grow
bedrock rock that makes up earth's crust, also the solid rock layer beneath the soil.
humus dark- colored organic material in soil.
fertility a measure of how well soil supports plant growth.
loam rich fertile soil that is made up of about equal parts clay, sand, and silt.
pH scale
soil horizon
topsoil
subsoil
decomposer
Created by: gah10967
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