terrestrial, Perisphere is the foundation of _________ life on this planet, forming the pedosphere., mineral, Soil comprises approximately 45% ________, 25% air, 25% water, and 5% organ matter., faster, Soil formation in tropical climates is _______ than in dry and cold climates., Loam, ____ is ideal for agricultural use as it combines the nutrient-retention and water-holding abilities of clay particles with good aeration and drainage properties for large particles., OBE, Soil scientists identify soil horizons using the capital letters __, A, __, C, and __., Gelisols, ________ are frozen soils found in the world's coldest regions., ultisols, Weathered soils are known as ________., thinner, Topography influences water flow and erosion, resulting in ________ soils on steep slopes., hard bedrock, The ____ _______ is a layer of loose, heterogenous, and superficial material that covers the bedrock., Aridisols are extremely dry soils found in ____ regions., arid.

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