What is another name for swidden agriculture or shifting cultivation?
A) pastoral nomadism
B) industrial agriculture
C) livestock ranching
D) slash-and-burn agriculture
E) dairy farming
D
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During the dilatency stage prior to an earthquake:
a. seismic velocity increases and the number of foreshocks decreases b. seismic velocity decreases and the number of foreshocks increases c. seismic velocity increases and the number of foreshocks decreases d. seismic velocity decreases and the number of foreshocks decreases
According to the Milankovitch theory, the total heat received from the sun varies very little, but there is enough
interaction of orbit and tilt changes to cause climate changes. a. True
b. FalseWhich soil horizon may be red in color and contain clay?
A) O horizon B) A horizon C) C horizon D) B horizon
What is used to visualize ocean layering?
A) A caballing chart B) A circulation histogram C) A layering table D) A temperature-salinity diagram