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Soil Orders

QuestionAnswer
Deep accumulation of organic materials, wet conditions. (organic) Histisols
Very cold permafrost (permafrost). Gelisols
Desert shrubs, grasses, dry Aridisols
Moist, mildly acid clay accumulation Alfisols
Wet tropical and subtropical forests, acid silicate and Fe, Al oxides. (strongly acid clays) Ultisols
Wet, tropical forest, extreme weathering, low activity clays, Fe, Al oxides (oxides) Oxisols
Soils start from here (recent) Entisols
Mild weathering on volcanic ejecta Andisols
Mild weathering, various conditions (beginning B) Inceptisols
High base status, high activity clays, dry season (swelling clays) Vertisols
Semi-arid to moist grasslands, mollic epipedon (soft, dark) Mossisols
Cool, wet, sandy acid, coniferous forest (spodic horizon) Spodosols
Created by: 1505727526
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