Short-term climatic events, such as the Little Ice Age, may be caused by:
a. variations in solar energy.
b. large volcanic eruptions.
c. Milankovitch cycles.
d. variations in solar energy AND large volcanic eruptions.
e. No one really knows.
E
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Thailand has the dubious distinction of being one of the world's centers for this illicit activity.
A) opium growing B) arms trading C) prostitution D) money laundering E) gambling
Features associated with convergent plate boundaries include volcanic island arcs, oceanic trenches, and mountain belts
Indicate whether the statement is true or false
Why is China's urban system such a good example of Central Place Theory?
A) because China's urban system is balanced, with sizable cities relatively evenly spaced and no city overshadowing others B) because China's urban system uses straight lines for roads all leading into the central plaza of the city C) because China's urban system was carefully planned by the country's communist leaders based on Central Place Theory D) because China's urban system has a primate city in each of its provinces E) because China's urban system is constantly expanding into the rural hinterlands
Karst usually develops in humid climates due to ____
a. excess rainfall b. greater amounts of vegetation c. presence of streams d. excess groundwater