Please help with as many as possible. Thanks so much in advance!!

1) How does the circular flow of economic activity relate to the demand for resources?

2) Describe how the substitution effect and the income effect influence the slope of an individual's supply curve of labor.

3) What does the elasticity of demand for labor measure? List and describe the factors that influence this type of elasticity.

4) Describe the relationship between income and education in the United States.

5) Maria and Lourdes work for the same company. If Maria earns more than Lourdes, is this evidence of wage discrimination? Explain your answer.

6) What is the connection between the payment of 'normal' interest and opportunity cost?

7) Why are 'normal' profits considered a cost in economics?

8) What is the difference between accounting profit and economic profit?

9) What is the relationship between risk and reward?