The english colonization of australia had a negative effect on a) the settlers. b) the aborigines. c) the english economy. d) the nation's literacy rate.

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.