Smectite and vermiculite are more prominent in extremely weathered soils than in soils where only modest weathering has occurred.
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Q27: Humus has a much higher cation adsorption
Q28: While kaolinite particles are larger than those
Q29: The high cation adsorption capacity of vermiculite
Q30: Iron and aluminum hydrous oxides are characteristic
Q31: Even at pH values near 7.0 some
Q33: In most soils of the arid regions
Q34: The primary source of charge for 2:1
Q35: Vermiculite and associated silicate clays have a
Q36: The cation exchange capacity of a soil
Q37: A tetrahedral sheet is characterized by a
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