Explain the apparent discrepancy that lush tropical rainforests characteristically grow on very infertile soils.
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Q. 2 - Plants are important in producing soils. How do plants at the surface affect the B horizon?
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Q. 3 - Examine the full-page photograph at the beginning of this chapter. The aerial view in eastern Washington shows natural hillslopes and farmland.
The yellow areas are growing wheat. The remaining areas are covered in native grasses. Explain how the farming practices visible in the photograph are designed to minimize soil erosion.
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Q. 4 - You discover an ancient reddish soil deposit buried beneath younger sediment and the modern soil. What horizon does it likely represent? What would you look for in this ancient soil to determine the ancient climate?
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Q. 5 - Several years during the 1940s were characterized by very deep mountain snowpacks in southern Colorado. What evidence do you see for impact of these snowpacks on Rio Grande flow at Albuquerque?
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Q. 6 - Why do E horizons not occur everywhere?
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