Stable air masses over cities and warm updrafts between tall buildings often create ________ in and near cities.
A. Convective rain storms
B. Low pressure zones that dissipate pollution
C. High pressure zones that dissipate pollution
D. Dust domes of suspended pollutants
E. Cyclonic dust storms
Answer: D
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What happens to tropical soils when the rainforest is cleared?
a. The soil improves in that soluble nutrients are no longer depleted by the trees. b. There is little effect on the soil because of its depth of richness. c. Clearing interrupts the critical nutrient cycle and leads to soil leaching. d. The soils stabilize and become excellent for grain crops.
Demographic transition theory better explains changes in non-core countries than changes in core countries
Indicate whether this statement is true or false.
No two places on the Earth's surface experience exactly the same climatic conditions
Indicate whether the statement is true or false
The thermocline defines the ___________, and the pycnocline defines the ___________
a) Area where the water density rapidly changes; area where the temperature rapidly changes b) Area where the water temperature rapidly changes; area where the water density rapidly changes c) Area where the temperature of the water is at equilibrium; the density of the water is at equilibrium d) Area where salt concentration rapidly changes; area where oxygen rapidly changes