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Soil (Soil is made up of; (Rock Particles (Sand (less than 2 mm), Silt…

- - - - Humus
        
        sulfur
        
        nitrogen
        
        potasium
        
        phosphorus
  - - - less than 2 mm
    - - less than 1/16
    - - Less than 1/236
        
        Loam
    - - 2 mm or more
- - - - Develops from the C horizon when the plant roots weather the rock mechanically and chemically.
    - - Develops as rain water washes clay and minerals from the A horizon to the B horizon.
    - - Forms as bedrock weathers and rock breaks up into soil particles.