1. Explain what it means for a good to be rivalrous in consumption.
2. Explain what it means for a good to be nonrivalrous in consumption.
3. Explain what it means for a good to be excludable.
4. Explain what it means for a good to be nonexcludable.
5. Describe the free rider problem.
6. Describe the basis for accepting the public provision of nonexcludable public goods.