Across
- 2. plant life
- 9. very dry
- 10. people who hunt animals and gather plants and fruits for food.
- 11. a dry region on one side of a mountain range.
- 14. blood relationship
- 15. low-lying areas
Down
- 1. small rivers that drain into a larger river
- 3. such as carbon dioxide, are produced by burning fossil fuels like coal and oil
- 4. the practice of using natural resources wisely so they aren't used up.
- 5. low mountains and plateaus
- 6. large open areas used for grazing and growing cops
- 7. flat firlds cut into slopes or mountainsides
- 8. continuous movement of air or water in the same direction
- 12. people who move from place to place
- 13. large geometric designs and animal shapes drawn on the ground