Across
- 2. using less energy to do the same tasks
- 3. set of lines that run east and west drawn on maps and globes that are measured in degrees north and south from the equator
- 7. period of 1,000 years
- 8. a river and its tributaries
- 9. an area in which many features are similar
- 12. a region that has similar landforms throughout
- 15. a line of longitude that runs from the north pole to the south pole
- 16. plant life that grows naturally in a place
Down
- 1. something that CANNOT be made again by nature or people
- 4. the kind of weather a place has most often, year after year
- 5. any area of water extending into the land from a larger body of water
- 6. next to each other
- 9. something that can be made again by nature or people
- 10. the number of people who live in an area
- 11. dry
- 13. a period of 10 years
- 14. the height of land in relation to sea level
