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the progressive degradation of grassland and other productive lands into unproductive desert
a biological, chemical, or physical process that helps form soil from rock; rock is gradually broken down into smaller and smaller particles
the process by which dissolved materials (nutrients or contaminants) are washed away or filtered down through the various layers of the soil
the horizontal layers into which many soils are organized, from the surface to the underlying parent material
a mutualistic association between a fungus and the roots of a plant. Enables plants to absorb adequate amounts of essential minerals from the soil
agricultural and forestry techniques in which trees and crops are planted together to improve soil fertility in degraded soils
a method of cultivation in which residues from previous crops are left in the soil, partially covering it and helping to hold it in place until the newly planted seeds are established
a method of conservation tillage that leaves both the surface and subsurface undisturbed. Special machines punch holes in the sol for seeds
a soil conservation method that involves building dikes on hilly terrain to produce level, terraced areas for agriculture
Soil conservation act
authorized the formation of the formation of a service whos mission is to work with US citizens to conserve natural resources on private lands
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