In the Western Hemisphere, crocodiles can be found only as far north as southern Florida. Crocodiles require warm temperature to survive. The average annual temperature for southern Florida is 76 degrees
. However, crocodile fossils and fossilized subtropical plants have been found in parts of western Colorado, where the average annual temperature is
.
Which statement explains why crocodile fossils are found in western regions of the United States but living crocodiles are not?
A
Crocodiles used to live in cold climates but adapted to warm climates.
B
The climate changed, and crocodiles could not survive in this region.
C
Crocodiles migrated from Florida to Colorado, where they died.
D
A glacier carried crocodile bones from Mexico to Colorado