Which of the Following Is NOT One of the Changes

Multiple Choice

Which of the following is NOT one of the changes that has already occurred in North America as a result of climate change?

A) Glaciers have receded in Glacier National Park.
B) Mexican butterflies are breeding in Texas.
C) Polar bears have become extinct.
D) Armadillos have been found in southern Illinois.
E) Exotic fish species are migrating into Chesapeake Bay.