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Unformatted text preview: weathered rock. Bedrock lies beneath it. D. Cold climates have poorly developed soils (Frozen constantly) E. Humid, tropical climates have thick soils. (High temperature & precipitation; lots of leaching.) F. Temperate climates have thick soils but less leaching. (Most fertile) III. Land Use A. 13% can be farmed. Why? 1. Too rocky 2. Poor soil 3. Bad climate for crops 4. Nutrients get used up quickly; Fertilizers are needed. (expensive & can be poisonous!) 5. Rocky or hilly areas used for other things. a. Grazing b. Lumber (heat, fuel, building materials) B. How can land use be managed? 1. Planting legumes ( peas, beans, clover, peanuts) adds nutrients to soil. 2. Contour soil to reduce erosion 3. Minimun till farming reduces wind erosion....
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- Fall '10
- I. Soil formation, II. Soil Composition, C. Soil profiles, Parent material type