Part 1

1. Describe the origins of stewardship and its modern applications.

2. List four stages of the policy life cycle, and show how the discovery of ozone layer destruction and the subsequent responses to it illustrate the cycle.

3. Define and compare the terms species, population, and ecosystem.

Part 2

1. Name and describe the roles of the three main trophic categories that make up the biotic structure of every ecosystem. Give examples of organisms from each category.

2. List the environmental and social consequences of rapid population growth in rural developing countries and urban areas.

3. What is meant by the debt crisis of the developing world? What is being done to help resolve this crisis?

Part 3

1. What is meant by desertification? Describe how the process of erosion leads to a loss of water-holding capacity and, hence, to desertification.

2. What are drylands? Where are they found and how important are they for human habitation and agriculture?

3. What are radioactive emissions and how are most humans exposed to them?

Part4

1. Describe the public health roles of the CDC and the WHO.

2. What are the four categories of human environmental hazards? Give examples of each.

3. What is meant by "economic exclusion"? How is it related to the problems of crime and poverty in cities?