Rills are ____.
A) steep slopes where soils form slowly
B) flat areas where soils form slowly
C) rocky areas where soil formation is difficult
D) shallow enough to be eliminated by plowing
E) too deep to be eliminated by plowing
Correct Answer:
Verified
Q21: In the Northern Hemisphere, north-facing slopes _.
A)will
Q22: Clay particles in soil are important in
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
Q27: Observed in a vertical cross section, soil
Q28: The difference in elevation between high and
Q29: Horizon B has fewer organisms and less
Q30: Humus _.
A)is the material always comprising the
Q31: Salinization of soils _.
A)aids in plant growth
B)makes
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