Typical characteristics of global cities include all of the following except.
A.
being at the center of the world’s economy and trade
B.
being networked with the rest of the world
C.
being culturally isolationist
D.
being wealthy and influential in business

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.