1. Contrast the difference between temporary and permanent damages on the incentives of people to build new houses near the cement factory.
2. To what extent can the private law of property solve the problem of pollution?
3. The price line P0 is horizontal in What does this fact indicate about competition?
4. Assume that science reveals a new health hazard caused by breathing pollution from cement factories. How would such a discovery modify the graph and change the efficient level of production of cement?