Crude birth rates are measured in terms of the number of children born
A. In a single year
B. Per family
C. Per 1,000 people in the general population
D. Per 1,000 people each year
E. Per family per year
Answer: D
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On maps like the Washington, D.C. metro map, the region where most of the subway lines intersect is most probably the
A) CBD. B) zone of transition. C) suburbs. D) exurbs. E) edge cities.
When liquid water gets below 4°C, it ____
A) ?forms a gas by breaking all of its hydrogen bonds B) ?behaves like all other liquids and increases in density C) ?begins to decrease in density by expanding D) ?compresses its molecular structure and becomes more saline
Lenticular clouds form most frequently on the windward sides of mountains
Indicate whether the statement is true or false
Falling rain and snow is called
a. ?condensation. b. ?evaporation. c. ?sublimation. d. ?crystallization. e. ?precipitation.