The presence of humus in the soil lowers the density of the soil.
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Q100: Distinctly alkaline diagnostic horizons, thin profiles, lack
Q101: Sandstone bedrock usually produces a coarse soil
Q102: Regolith is the loose, inorganic material overlying
Q103: In the long run, temperature and moisture
Q104: Soil is considered to include dead and
Q106: In the soil, the C horizon is
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Q109: Ultisols generally lack _.
A) clay
B) iron
C) humus
D)
Q110: An Alfisol is most closely related to
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