Which of the following is true of the Pleistocene ice sheets in North America?
A)at their maximum,they extended to the present-day Canada/U.S.border.
B)they had a minimal effect on the landscape.
C)they completely disappeared by 7,000 years ago.
D)the edges of the ice sheets were not even rather,they were characterized by ice lobes that formed curved edges.
E)all of North America was covered with ice at the Pleistocene maximum.

Question

Quizplus · Accepted Answer

The edges of the Pleistocene ice sheets in North America were not even, rather they were characterized by ice lobes that formed curved edges. This is due to the complex interaction between the topography, climate, and ice dynamics during the Pleistocene era. The ice sheets extended to varying degrees across North America but did not cover the entire continent. They also had a significant effect on the landscape, shaping the land through erosion and deposition. The ice sheets began to recede around 18,000 years ago and were mostly gone by 7,000 years ago, although small remnants remain today in the form of glaciers.

Which of the Following Is True of the Pleistocene Ice