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Soil- a mixture of different materials, The soil is called a loam when it…
Soil- a mixture of different materials
Soil Profile
E horizon: extras from the topsoil (only seen sometimes)
B horizon:
subsoil
accumulation of leached minerals and nutrients
A horizon
topsoil
lots of nutrients and decomposed organic material
C horizon:
regolith
partially broken down parent material
O horizon:
good porosity
workable
made of humus (organic material)
R horizon:
bedrock (unbroken parent material)
supplied some of the inorganic minerals and rocks in upper layers
Chemical elements
Oxygen
Iron
Aluminum
Silicon
Soil is classified by 3 materials:
Silt- middle grain size, permeable
Clay- biggest grain size, holds water
Sand- smallest grain size, permeable
The soil is called a loam when it has a mixture of grain sizes