What is a rule that describes the translation ABCD ⇒A' B' C' D'?

In a economy individuals answer the three basic and the central authority or leaders have little say in the economy.

At which point on the diagram do convection currents occur to drive plate movement?

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.