1.Gross composition (silicate minerals, volcanic ash, sesquioxides, and organic
soils, permafrost).
2.Epipedons and subsurface diagnostic horizons.
3.Dominating soil climate (e.g. aridic moisture regime, permafrost environment)
4.Soil weathering, leaching and fertility (e.g. base saturation and organic)
jim items answered the question on October 8, 2018 at 11:17
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