Author Question: The Great Lakes of North America were created by A) cirque glaciers. B) ice sheets that enlarged ... (Read 55 times)

strangeaffliction · **on:** Jul 14, 2018

The Great Lakes of North America were created by

A) cirque glaciers.
B) ice sheets that enlarged and deepened stream valleys to form the basins of the future lakes.
C) the deposition of ice in till plains.
D) isostatic subsidence of the crust.

Question 2

Which of the following is INCORRECT relative to the Pleistocene Epoch?

A) It represents a single, continuous cold spell.
B) The ice sheets disappeared approximately 7,000 years ago.
C) In some areas the ice sheets were more than 2 km (1.2 mi) thick.
D) It began 1.65 million years ago.