A. is intensified by the move of the middle class to the suburbs
B. has been reduced by urban renewal
C. has been intensified by gentrification
D. is well on the way to being resolved
A. prosperity
B. crisis
C. natural disasters
D. conversations among intellectuals
A. by around the middle of the 18th century
B. with improvements in agriculture technology and medicine
C. in the Bronze Age
D. in the 17th century when agriculture technology and medicine
A. Large consumer purchasing power
B. Elastic demand
C. Inelastic demand
D. Inferior products
A. Total costs fall
B. Marginal costs increase
C. Average costs fall
D. Revenue falls
A. copyright infringement
B. data rape
C. price fixing
D. all but B
A. is exclusively used by anthropologists
B. requires the researcher to disguise his or her identity
C. involves experimental controls
D. may compromise the objectivity of the researcher