Graph a hypothetical PPF for a wealthy and developing country. Each country on your graph should have the same degree of concavity, with the two outputs of goods and services labeled "Other Goods and Services" on the X-axis and "Clean Air and Water" on the Y-axis. Step 2: Contrast the effects of environmental quality on your PPF. What are the trade-offs that people might experience in the wealthy and developing countries when equal increases in clean air and water occur? Write out your answer on the graph. How have trade and specialization affected production expansion? Can these effects be universally applied? Why might environmental quality treaties such as the Kyoto Protocol require greater reduction targets for richer countries?