Which soil order is characterized as having an uppermost horizon that is unusually rich in organic matter?
A. Ultisols
B. Aridisols
C. Histosols
D. Gelisols
Answer: C
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Which of the following symptoms most closely matches the known physiological effects of carbon monoxide?
A) Feeling tired B) Inflammation of the eyes, nasal passages, and skin C) Skin cancer D) Lung irritation and bronchitis
What occurs in alley cropping?
A. Crops are planted in strips between trees and shrubs. B. Terraces are built to prevent swift water runoff. C. Crops are planted across slopes. D. Special tillers are used so the topsoil is not disturbed. E. A row crop alternates in strips with another row crop.
Storms typically form along the polar front. However, there are also storms that develop over polar water behind (or poleward of) the main polar front
a. True b. False