Which one of the following is not an effect that Pleistocene glaciers had on the landscape?

Pleistocene glaciers primarily shaped the landscape through processes such as erosion, deposition, and the formation of landforms like moraines and drumlins. They also created features like glacial lakes and valleys. However, a notable effect that Pleistocene glaciers did not have on the landscape is the formation of desert landforms, as their influence was predominantly in cooler, glaciated regions rather than arid environments.