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Soil Mind Map - Coggle Diagram
Soil Mind Map
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The Soil Profile
A horizon is the top soil or mineral layer. This layer is usually dark in color due to the high proportion of organic matter.
B horizon is the sub-soil and tends to be the zone of illuviation or accumulation. Minerals and particles are washed into this horizon from the ones above.
Organic horizon (O horizon) is on the top of the soil and includes all the DOM that accumulates on top of the soil.
C horizon is the decomposed parent material. In most cases this layer is not really affected by soil processes but it has weathered.
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