A recent change in the typical U.S. density gradient has been
A) the elimination of the gap traditionally found in the center.
B) an increase in the extremes between the inner and outer areas.
C) an increase in the number of people living in the center.
D) a reduction in the differences in densities found within an urban area.
E) an increase in the differences in densities found within an urban area.
Answer: D
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In the past, low-income people
A) lived in the center of European cities. B) were banned from living in the cities. C) were only allowed to live in the inner cities. D) lived in a segregated part of the suburbs along major routes. E) paid higher taxes for the right to live in the inner cities.
What type of alcohol is formed by the hydration of 2-methyl-2-butene?
A) primary B) secondary C) tertiary D) None of these, the product is not an alcohol.
A(n) ____________________ is a large parcel of air, sometimes subcontinental in size, that may move over Earth's surface as a distinct, relatively homogeneous entity
Fill in the blank(s) with correct word
Most of our table salt comes from ________
A) salt obtained by evaporating seawater in dry climates B) salt taken from mines C) China D) combining the metal sodium and the nonmetal chlorine gas in a chemical reaction vessel to make pure NaCl