Why are some soils black?
Answer to relevant QuestionsWhere in the world are the high-protein plants grown and why?Explain the difference between weathering and erosion.Which other elements, besides iron, are commonly oxidized?Name the three most abundant types of sedimentary rocks in order of decreasing abundance and tell why each is so abundant.(a) Why are cross-beds (Fig. 5.4) very important sedimentary structures?
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