4. Classify and explain the soil.
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Soils are named and classified on the basis of physical and chemical properties in their horizons (layers). "Soil Taxonomy" uses color, texture, structure, and other properties of the surface two meters to key the soil into a classification system to help people use soil information.
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Soil is the uppermost layer of the earth's crust. It consists of small rock particles, minerals, gases and mixture of organic substances called humus.
Soil profile is the verticle section of soil which is categorized into different parts.
H (Horizon)
O (Organic)
A (Surface)
B (Subsoil)
C (Substratum)
R (Bedrock)
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