Geographic isolation of foxes might be caused by... A. a rise in sea level
B. a meteorite impact
C. the formation of deep canyon.

What are the four basic classes of organic molecules how do they differ structurally and functionally

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?