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SOIL EROSION (is the removal of top soil (which is nutrient rich top layer…
SOIL EROSION
is the removal of top soil
which is nutrient rich top layer of soil
vital for plants
takes decades to develop
by
water
floods can remove much soil
reduced by contour farming
wind
in drought conditions
water that kept sand grains together
have evaportation
leads to
dust storms
human activity
no trees ( no wind breaks )
overgrazing
removal of trees
can be reduced by
no tillage farming
wind breaks
not overgrazing
stock rotation