Soil air contains more ____ and less ____ and nitrogen than atmospheric air does.
A) oxygen; carbon monoxide
B) carbon dioxide; oxygen
C) oxygen; argon
D) oxygen; dust
Correct Answer:
Verified
Q11: Steep-sided mountainous soils tend to be _
Q12: A soil profile shows a sequence of
Q13: Where would soil formation be relatively rapid?
A)
Q14: The soil formation process involving the introduction
Q15: Loess is:
A) loose mixtures of minerals and
Q17: The R soil horizon stands for _.
A)
Q18: In the tropics, what causes organic matter
Q19: The reddish-brown color in the B horizon
Q20: All soils have distinct horizons that are
Q21: Most tropical soils are rich in nutrients
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