Using demand and supply curves, show the effect of each of the following on the market for cigarettes:

1. A cure for lung cancer is found.
2. The price of cigars increases.
3. Wages increase substantially in states that grow tobacco.
4. A fertilizer that increases the yield per acre of tobacco is discovered.
5. There is a sharp increase in the price of matches, lighters, and lighter fluid.
6. More states pass laws restricting smoking in restaurants and public places.