Introducing Physical Geography (Wse)

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Chapter 10 Global Soils This chapter looks at the life layer where physical and biological processes interact. It examines soil characteristics, the processes of soil formation, and the global pattern of the distribution of soil that develops as the interface between the lithosphere, the biosphere, and the atmosphere. Soil is a complex mixture of solids, liquids, and gases. It contains mineral material derived from the parent material and organic matter derived from living plants and other organisms in the soil. The major soil-forming factors are parent material, climate, vegetation, and time. Soil characteristics develop over very long periods of time. Soil color is the most obvious characteristic of soil. Color may be inherited from parent material, but it is often a result of soil forming processes. Soil texture refers to the proportion of soil particles that fall into each of three size grades: sand, silt, and clay. Soil colloids
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ch_10_sum_soils - Chapter 10 Global Soils This chapter...

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