Across
- 5. area publicly owned
- 8. Countries with rapid population growth
- 11. The study of the impact of humans on the environment.
- 12. Countries with higher average income
- 13. condition where needs are met, populations can survive indefinitely
- 15. reduced quantity of something
- 16. balances the cost of action against the benefits expected
Down
- 1. Any natural material that is used by humans.
- 2. shows productive area of Earth needed to support one person
- 3. The study of how living things interact with each other and with their nonliving environment.
- 4. An undesired change in air, water, or soil that adversely affects the health, survival, or activities of humans or other organisms.
- 6. when supply and demand are in balance
- 7. the greater the demand, the more it's worth
- 9. helps create ways to protect health/environement
- 10. who wrote "The Tragedy of the Commons"
- 14. the number and variety of species in an area