____ Are Transitional Environments Because They ____

Multiple Choice

____ are transitional environments because they ____.

A) Sand dunes; involve marine and continental processes
B) Barrier islands; involve marine and continental processes
C) Submarine fans; involve marine and continental processes
D) Glaciers; straddle the boundary between the mountains and the plains
E) Alluvial fans; straddle the boundary between the mountains and the plains