In a 150 to 200 word response, present your answer to one of the following questions:

Some demographers claim that the total world population has already begun to slow, while others dispute this claim. How would you recognize a true demographic transition, as opposed to more random fluctuations in birth and death rates?

In chapter 3, carrying capacities were discussed. What do you think are the maximum and optimum carrying capacities for humans? Why is this a more complex question for humans than it might be for other species?

Genetic diversity, or diversity of genetic types, is believed to enhance stability in the population. Most agricultural crops are genetically very uniform. Why might the usual importance of genetic diversity not apply to food crops? Why might it apply?

Scientists need to be cautious about their theories and assumptions. What arguments could you make for and against the statement that humans are causing extinctions unlike any in the history of the earth?

Why do you suppose dry tropical forest and tundra are well represented in protected areas, while grasslands and wetlands are rarely protected? Consider social, cultural, geographic, and economic reasons in your answer.

Oil and gas companies want to drill in several parks, monuments, and wildlife refuges. Do you think this should be allowed? Why or why not? Under what conditions should drilling be allowed?