soil more than just a bunch of dirt n.
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Soil: More than just a bunch of dirt
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  1. Soil: More than just a bunch of dirt

  2. What is soil made of? • The basic components of soil are: • decayed remains of once living organisms (organic material) • rock • water • air

  3. Layers of soil • Humus • Topsoil • Subsoil • Bedrock

  4. Humus • Living material • Plants • Decaying leaves • Needles • Moss • Thin layer • Dark color

  5. Topsoil • Mostly minerals • Plant roots • Dark color • Decaying plants • Decaying animals

  6. Subsoil • Silt • Sand • Clay • Not broken down all the way

  7. Bedrock • Lowest layer of soil • Solid rock layer