Across
- 4. Spherical model of the entire planet
- 5. Winds that shift direction with the season
- 7. Area where several metropolitan areas grow together
- 9. Annual number of births per 1000 people
- 12. Things of economic value that a person or company owns
- 13. Any place where plants and animals depend upon each other
- 14. Water that falls to Earth's surface
- 15. Plant or animal's surroundings
- 16. Use of knowledge, tools, and skills to solve problems
- 19. Slow process of losing soil fertility and plant life
- 20. Any place where a community is established
Down
- 1. Water without salt
- 2. Money one has left after paying expenses
- 3. Written plan of government
- 6. Problem that occurs when a factor of production is in short supply
- 8. Problem of having unlimited human wants in a world of limited resources
- 10. Benefit that can happen when a factor of production is increased
- 11. Major seaport in the British colonies during the 1700s
- 17. Water found below Earth's surface
- 18. Region's average weather conditions over a long period