The parent material layer of a soil is composed of weathered
A) humus.
B) organic detritus and roots.
C) residual aluminum and iron.
D) soil.
E) rock fragments.
Correct Answer:
Verified
Q10: What is the theoretical basis of the
Q11: The energy needed to process and distribute
Q12: All are common modern agricultural methods,except
A)aquaculture farms.
B)plowing
Q13: Vitamin A deficiencies are associated with
A)anemia.
B)weak bones.
C)a
Q14: Which of the following are forms of
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Q18: Waterlogging results from
A)toxic metal accumulation.
B)excessive irrigation.
C)excessive plowing.
D)high
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Q20: High responder crops of the green revolution
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