Although much of today's glaciers are receding, evidence of the extent may be seen by the following:

Question

Quizplus · Accepted Answer

U-shaped valleys and plucked bedrock are characteristic landforms created by glacial erosion, and striations on bedrock and unsorted till are evidence of glacial deposition. Well-sorted deposits, on the other hand, are not indicative of glacial activity as glaciers tend to deposit unsorted till. Therefore, the best choice is D, as it includes both landforms created by glacial erosion and evidence of glacial deposition.

Although Much of Today's Glaciers Are Receding, Evidence of the Extent