The major landform in africa south of the sahara is a a. low plain rising to towering mountains. b. vast plateau surrounded by a narrow coastal plain. c. low plain rising to a high plateau in the south. d. series of parallel high mountains

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions