Across
- 3. Period when sewer systems were created
- 6. Another word for Jobs
- 8. The ability to move to a stable amount/#
- 11. Density of people in one area
- 13. Death rates
Down
- 1. The disease transmitted by drinking polluted water
- 2. Most Important Development in Human History
- 4. Textile that replaced wool
- 5. Coal powered, improved farming large land areas
- 7. High death rates/High birth rates
- 9. Birth rates
- 10. Lifestyle before the Agricultural Revolution
- 12. The approximate world population currently