Ais a geologic break between an upland region and a coastal plain, and is often crossed by a river with varying degrees of rapids. a) fall line b) flat mesa c) stone run d) tectonic shift

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.