One approach to preserving open space, used in cities such as Toronto and Vancouver, is to surround a city with a(n) ____.
A. highway
B. mass transportation system
C. greenbelt
D. an area of cropland
E. a series of open malls
Answer: C
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Cold fronts that move into the United States from the east, or northeast, are called ____ fronts
A) eastern B) back door C) stationary D) warm-type occluded
Replacement fertility ________
A) is equal to 2.1 in stable populations B) is a contraceptive technique C) restores population size after a catastrophic event D) is below 2 in Latin America and the Caribbean E) is below 2 in Africa
In the principle of original horizontality, what is the mechanism that causes sediment to accumulate in fairly horizontal sheets on a flat plain?
a. Viscosity b. Sorption c. Pressure d. Gravity
According to Wien's Law, Earth's radiation maximum is in the infrared range
Indicate whether the statement is true or false