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Soil formation, type and erosion

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Fill in the blank to complete the sentences covering soil formation, soil type and fertility and soil erosion.

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San Vicente y las Granadinas

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Soil formation, type and erosion

Fill in the blank to complete the sentences covering soil formation, soil type and fertility and soil erosion.

Camesha Browne
1

Algae sand clay contouring air salts physical humus pH chemical biological water erosion chemical waterloggng Erosion air sand terracing humus acids

Physical weathering breaks rocks into smaller pieces , whereas weathering changes the composition of rock . and lichen can grow on bare rock and produce to change the rock ( action ) . Rock particles in the soil are of different sizes ; has larger particles than clay . Dead and decayed organisms form the in soil .
The small particles pack closely together ; this can lead to and lack of . Larger particles have large spaces between them ; drains through easily . Adding compost can improve both kinds of soil , n as it decays to make , which slowly releases mineral salts .
Most of the properties of soils depend on the sizes of particles . Some properties of soil are their , salinity and mineral . is the loss of topsoil as a result of wind and rain . Some ways of reducing are to keep the soil surface covered , and to practise crop rotation , and .