3. what distinguishes utilitarian conservationist from biocentric preservationist? 4. how can a systems perspective improve environmental management? 5. why is the national environmental policy act the cornerstone of u. s environmental law? 6. what are the environmental impact statements? 7. what is the epa's role in environmental regulation? 8. what is natural capital? how economics related to natural capital? 9. why are national income accounts incomplete estimates of total national economic performance? 10. how are marginal costs of pollution, marginal cost of pollution abatement, and optimum amount of pollution related? 11. how do command and control regulation and incentive-based regulation differ regarding pollution control?