Humus is ________
A) composed of organic matter and is necessary to fertility and holding soil moisture
B) artificial fertilizer applied to monocultures
C) one of the primary causes of desertification
D) the result of agricultural runoff into waterways or groundwater
E) found in the E layer of a soil horizon
A
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Differentiate between point and nonpoint sources of water pollution
What will be an ideal response?
What maintains the permanent thermocline found at all low and mid-latitudes?
A) Continual upwelling B) Warm water currents C) Density stratification D) None of these choices
A forecast method that compares past weather maps and weather patterns to those of the present is a(n) ____
A) persistence forecast B) analogue method C) trend method D) steady-state forecast
All of the following are differences of European CBDs as compared to the U.S. CBDs except
A) more people live in CBDs. B) more day-to-day consumer services in the CBDs. C) narrow streets and low-rise structures. D) contains financial services. E) poor people more likely to live in outer rings.