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Soil - Coggle Diagram
Soil
SOIL PROFILE
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a horizon: topsoil, lots of decomposed organic material
o horizon: humus, good porosity
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c horizon: regolith, partially broken down parent material
r horizon: bedrock, inorganic compounds came from parent rock
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SOIL COMPONENTs:air, water, organic matter, minerals
COMMON SOIL ELements: silicon, aluminum, iron, and oxygen
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