What are some examples of infrastructure that has been fashioned to manage water resources?

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.

Match the letters with the correct terms

__ has (or have) been one of the most common pull factors of migration within the united statesa. lack of humanityb. gamblingc. seafoodd. well paying jobs