Question

__________ is the natural boundary between two landform regions with different elevations. A. The Ring of Fire B. A fall line C. Glaciation D. A Continental Divide

Answer 1

fall line. It is created by the two differing elevations
a refers to volcanoes
c refers to glaciers eroding stuffs
d refers to a mountains in america

Answer 2

what the person means the answer is B. A Fall line