Over the Last 10,000 Years,which of the Following Has Taken

Multiple Choice

Over the last 10,000 years,which of the following has taken place in eastern North America?

A) A continental ice sheet has advanced into the northern states.
B) A cool temperate deciduous forest has moved into the Great Lakes region.
C) A temperate evergreen forest has advanced into Minnesota.
D) A prairie has become established in Kentucky and Tennessee.
E) A boreal forest has retreated northward.