ubjective Type Questions 5. Answer the following. (a) What is soil? (b) How is soil useful for plants? (c) What are soil horizons? (d) What are the different types of soil? Descri (e) What is soil erosion? How is it caused? (1) How can we define soil conservation? Elab
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a) Soil is the loose surface material that covers most land.
b) Soil supports plant growth by providing Oxygen.
c) A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath.
d) Soil can be categorised into sand, clay, silt, peat, chalk and loam types of soil based on the dominating size of the particles within a soil.
e) soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water and wind or through forces associated with farming activities such as tillage.
f). Soil conservation is the protection of soil from erosion and other types of deterioration, so as to maintain soil fertility and productivity.
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