Geog 274 Final Frequently Most Tested Questions and Verified Accurate Answers
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Course
Geog 274
Institution
Geog 274
soil
dynamic natural material composed of water, air, minerals, and organic matter. Non
renewable
why soil is important
important for ecosytems, serves as a habitat for microbes, source of nutrients, stores
greenhouse gases
biosphere
living organisms and their environment, open system d...
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✓ movement of material down the soil horizions
edaphosphere
✓ soil layer
soil building takes
✓ 100 years/cm
human impact on soil
✓ poor farming practices can cause more soil loss than formation, other factors are
overgrazing, deforestation, salinizatio, and desertification
Desertification
✓ Degradation of land, especially in semiarid areas, primarily because of human actions like
excessive crop planting, animal grazing, and tree cutting.
sustainable soil practices
✓ ploughing on the contour, reduced ploughing, no till agriculture (reduced water loss, soil
erosion, and encourages root growth)
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