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Crucigrama Sopa de Letras Hoja de Trabajo
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SOIL DEGRADATION

THE-GREAT PASS
Horizontales
Planting on type of crop in one place year after year
Artificial watering of the crops
Covering the land with pieces of plants
Can be caused by chemicals like fertilizers
The loss of soil quality and production
Can be prevented by mulching
Verticales
Allowing livestock to graze the vegetation so heavily
Loss of the top soil due to erosion
Heavy mechanisation
Poor drainage is the cause
The build up of salts in the soil
Digging and turning over of the soil