1. Wolves were reintroduced into Yellowstone National Park in 1995. In at least 1-2 sentences, predict how you think the wolves changed the rivers in the park. 2. Describe a trophic cascade.
3. How long had Yellowstone National Park been without wolves before they were reintroduced?
4. What happened to the deer population within that time?
5. What is the significant thing those few wolves changed when they were reintroduced?
6. What happened to the vegetation in the park after the wolves were reintroduced?
7. What two specific organisms did the trees coming back directly affect?
8. What did the beaver dams provide?
9. How did the wolves change the rivers?
10. How do the interactions between the wolves and the deer affect the ecosystem
11. Because of their unusually large effecton the ecosystem, wolves can be classified as a...?​

Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)