Across
- 2. all of the ways people apply knowledge, tools and inventions
- 7. an area with little rainfall
- 8. a series of connected mountains
- 10. a fast moving river meeting a slow moving body of water and depositing silt
- 11. a chain of islands
- 13. the practice of cutting and burning to clear land for crops
- 14. a strip of land surrounded by water on three sides
- 15. watering of crops
Down
- 1. a narrow strip of land connecting two larger land masses
- 3. humans who hunted and gathered
- 4. planting seeds to raise crops
- 5. the flat land surrounding a river
- 6. humans learned to grow and tend
- 9. people who move from place to place
- 12. a man made waterway used for irrigation or transportation