The requirement is to answer both questions and respond to other students for two times. Also, both quantity and quality are important when posting substantive messages. The messages must be

related to the course selected topic questions and you need to include new ideas. Q1. What kinds of changes in underlying conditions can cause the supply and demand curves to shift? Give examples and explain the direction in which the curves shift. Q2. What is the difference between a change in demand and a change in quantity demanded?