Clay particles in soil are important in soil development because they ____.
A) hold soil particles apart
B) allow water and gases to enter soil
C) retain water and supply nutrients
D) allow the flow of groundwater
E) they form horizon O in the soil profile
Correct Answer:
Verified
Q17: A type of mechanical weathering is _
Q18: Salinization occurs when the concentration of salts
Q19: Organisms contribute to chemical weathering by _.
A)mixing
Q20: When solution takes place, the ions of
Q21: In the Northern Hemisphere, north-facing slopes _.
A)will
Q23: Caliche is a _.
A)layer of silica cement
Q24: A measure of hydrogen ion concentration is
Q25: Some types of bacteria are extremely important
Q26: Rills are _.
A)steep slopes where soils form
Q27: Observed in a vertical cross section, soil
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