Please solve all these questions.

rimmew 9. . Define economics and make a distinction between macroeconomics and microeconomics. Demonstrate that scarcity, choice, and opportunity cost are at the heart of economics, making efficiency a cornerstone of the discipline. Explain why trade results in economies being more productive. . Explain the three fundamental questions. Explain the four ways economies can be organized. . Distinguish between savings and investment. What are two things that are true when an economy is in equilibrium? . Explain the difference between the stock of money and the flow of income. Define opportunity cost using your own examples. 10. Distinguish between productive efficiency and allocative efficiency