Question

What is evidence that an area was once covered by a glacier?

Answer 1

there are two different pieces of evidence. One piece is that there will be a u-shaped valley also, there will be unsorted sediment deposit

Answer 2

Answer:

The most apparent evidence is of course the glacial drift itself. Glacial drift refers to the rock material ground up and transported by a glacier and deposited by or from the ice (till) or in water derived from the melting of ice (outwash or lake sediment).