Soil: More than just a bunch of dirt

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Presentation transcript:

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 down all the way

Bedrock Lowest layer of soil Solid rock layer

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