1. Explain why the female reproductive system evolved a menstrual cycle, but the male system does not adhere to any kind of true cycle.
2. Compare the trends seen in the characteristics of r-selected and K-selected species, also noting examples and exceptions learned in your study of population ecology.
3. Relate the six main sexually transmitted diseases, their causes, and their treatments.
4. Throughout the story of the evolution of parasites, we frequently see a shift from parasites that seriously harmed their hosts, to those who evolve benign, nearly commensal relationships with their hosts. Evaluate why parasites are more likely to evolve "live and let live" relationships while predators do not.
5. Compare mutualism and commensalism and give an example of each.
6. Why is it advantageous for the rabies virus to make its victim "go mad?"
7. Describe the effects of energy loss going through the trophic levels.
8. Explain three global consequences of global warming.