Problem
1) Describe the change in population of Bison in the United States from the 1500's to the 19th century. What best explains this change in population?
2) Why were wolves initially hunted by European Settlers?
3) What was the effect on the ecosystems in Yellowstone when wolves were extirpated from the area.
4) How did restoring wolves to Yellowstone affect the ecosystems in Yellowstone?
5) What is hibernation and how does this benefit Grizzly bears in Yellowstone?