Once an ancient mountain range is destroyed by erosion,what evidence can geologists look for to learn of its past existence?
A)high,rugged peaks
B)crust containing igneous activity,deformation,and metamorphism
C)fossils of mountain-dwelling plants and animals
D)there is no detectable record of destroyed mountain ranges

Question

Quizplus · Accepted Answer

The crust containing igneous activity, deformation, and metamorphism is evidence of a past mountain range. These processes occur during the formation of mountains and leave a lasting record in the rock layers.

Answer: C 
 Fossils of mountain-dwelling plants and animals can also provide evidence of the past existence of a mountain range. These organisms are specific to mountain environments and are not found elsewhere, so their presence in a certain area can indicate the presence of a former mountain range.

Once an Ancient Mountain Range Is Destroyed by Erosion,what Evidence