What three cities form the global centers of economic activity?

Which of the following best describes the economy of africa?

[bws.05]where would uncharged particles be most likely found in an atom? o on the electrons o inside the protons o inside the nucleus outside the nucleus

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.