In which of the following regions is new material currently being added to the crust?
A)the Appalachian Mountains
B)the Cascade Range
C)the Canadian Shield
D)the Rocky Mountains

Question

Quizplus · Accepted Answer

New material is added to the crust in regions with active volcanism, such as the Cascade Range. This mountain range includes numerous volcanoes, which are part of the Pacific Ring of Fire, where the subduction of oceanic plates beneath continental plates leads to the formation of new crustal material through volcanic activity.

In Which of the Following Regions Is New Material Currently