Which answer best describes the continental shelf? thick deposits of sediments carried out from land
area of land that drops toward deep ocean basins
75-mile shallow flat area just off coastlines
the surf area along coastlines

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.

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust

Cardueline finches can be found in what areas of the world?