Expert systems: use rules based on human expertise. share characteristics with mainframe computing. solve problems too difficult for human experts. are based on DO WHILE rules. are a type of machine based intelligence.

Because they are located downstream from turkey on the tigris and euphrates rivers, these two nations are anticipating a reduction in water supply, as a result of 22 dams being built by the southeastern anatolia project. the two nations are a) iraq and iran. b) iraq and syria. c) iran and syria. d) saudi arabia and yemen.