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Soil: More than just a bunch of dirt
What is soil made of? The basic components of soil are: decayed remains of once living
organisms (organic material) rock water air
Layers of soil Humus
Topsoil
Subsoil
Bedrock
Humus Living material Plants Decaying leaves Needles Moss Thin layer Dark color
Topsoil Mostly minerals Plant roots Dark color Decaying plants Decaying animals
Subsoil Silt
Sand
Clay
Not broken downall the way
Bedrock Lowest layer of soil
Solid rock layer
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