Match the letters on the left with the numbers on the right. Place the correct letter in the blank. 1 Advantages of Trade A Scarcity 2 Land, Labor, Capital, Entrepreneurship B Capital Goods 3 Shifts in the PPC Curve to the Right C Specialization 4 Forces Choices D Factors of Production 5 Money & Resource Flows E Technological Improvements 6 Opportunity Costs F Circular Flow 7 Factory G Labor 8 Bus Driver H Next Best Alternative 1 _____ 2 _____ 3 _____ 4 _____ 5 _____ 6 _____ 7 _____ 8