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Across 3. resource that cannot be replenished once it has been used. 6. separation of work into a number of individual tasks to be performed by different workers. 9. power or energy generated by moving water. 11. substantial oversupply of a product. 12. contamination of air, water, or soil by the discharge of a poisonous substance. 14. energy made from wood, peat, municipal solid waste, straw, corn, tires, landfill gases, fish oils, and other waste. 16. corporation producing and selling without regard ti national boundaries and whose business activities are located in several different countries 18. a country's ability to produce a given product at a lower opportunity cost than another country. 19. cost of the next best alternative use of money, time, or resources when one choice is made rather than another.

Down 1. free enterprise system with some government involvement. 2. the movement toward a more integrated and interdependent world economy. 4. natural resource that can be replenished for future use. 5. fundamental economic problem of meeting people's virtually unlimited wants with scarce resources. 7. mixture of 90 percent unleaded gasoline and 10 percent grain alcohol, or ethanol. 8. way of thinking that compares the cost of an action to its benefits 10. federal permit allowing a public utility to release pollutants into the air. 13. hiring outside firms to perform non-core operations to lower operating costs. 15. state in which a society produces only enough to support itself. 17. pollution in the form of rainwater mixed with sulfur dioxide to create a mild form of sulfuric acid.