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Weathering/Erosion

Soil Formation Neumeyer 6

TermDefinition
Bedrock solid layer of rock beneath soil; once exposed, bedrock gradually weathers in smaller particles that are the basic material of soil
Soil loose mixture of rock particles, minerals, decayed organic material, air and water, in which plants can grow
Humus dark colored substance in soil from decayed or organic material
Fertility measure of how well soil supports plant growth
Loam soil that is made up of clay, sand and silt, best for growing most types of plants
Soil Horizon layer of soil that differs in color and texture from the layers above and below it
Topsoil the 'A' horizon or the top layer is crumbly, dark brown mixture of humus, clay, and other minerals
Subsoil the 'B' horizon below the topsoil consisting of clay and other particles washed down from the topsoil, but little humus
'C' Horizon bottom layer containing partly weathered rock
Soil Conservation management of soil to prevent its destruction
Contour Plowing farmers plow their fields along the curves of the slope to help slow of excess rainfall, which may wash away the soil
Conservation Plowing farmers leave dead weeds and stalks of the previous crops to all return nutrients to soil, helps retain moisture and holds soil in place
Crop Rotation farmers plant different crops in each field in each year
Created by: Elf360!
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