A large glacier has three medial moraines on top of it.How many valley glaciers must have a fed it?
A)one
B)two
C)three
D)four

Question

Quizplus · Accepted Answer

Each medial moraine on a glacier is formed when two glaciers merge and their lateral moraines (the debris collected along the sides of each glacier) join together. Therefore, for a glacier to have three medial moraines, it must have been formed from the merging of four glaciers. Each additional glacier adds another medial moraine.

A Large Glacier Has Three Medial Moraines on Top of It.How