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ESS- Soil System
Introduction to soil systems
32
Environmental Studies
12th Grade
09/15/2022
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Term
Bedrock
Definition

 

 Layer of partially weathered rock at the base of the soil profile. 
Term
Biota
 Definition
Term
Clay
 Definition
Term
Decomposition
 Definition
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Deposition
 Definition
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Drainage
 Definition
Term
Glacial moraines
 Definition
Term
Humus
 Definition
Term
Infiltration
 Definition
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Leaching
Definition

A natural process by which water-soluble substances such as calcium are washed out from the soil. This reduces the fertility of a soil.

 
Term
Lithosphere
 Definition
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Loam
 Definition
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Minerals
 Definition
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Parental material
 Definition
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Porosity
 Definition
Term
Precipitation
 Definition
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Mineral content
Definition
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Nutrient cycle
 Definition
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Organic material
 Definition
Term
Pedosphere
 Definition
 The outermost layer of the Earth that is composed of soil and subject to soil formation processes. 
Term
Permeability
 Definition
Term
Sheet wash
 Definition
Term
Sand
 Definition
Term
Silt
 Definition
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Soil
Definition
A mixture of inorganic mineral particles and organic material from decomposed flora and fauna that covers the underlying bedrock, and in which a wide variety of terrestrial plants grow.
Term
Soil horizon
Definition
A specific layer of soil that is parallel to the surface and possesses physical characteristics that differ from those of the layers above and beneath.
Term
Soil profile
 Definition
The vertical succession down through a soil which reveals distinct layers or horizons in the soil.
Term
Soil texture
 Definition
Term
Soil texture triangle
 Definition
Term
Transformation
 Definition
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Water holding capacity
 Definition
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Weathering
 Definition
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