Across
- 2. an area where all living things, such as the plants and animals, interact with each other
- 4. to use an item again
- 5. to change something, such as the physical environment
- 8. the form or shape of part of Earth’s surface
- 11. plant life
- 12. to change the way you do something
- 14. a palace where there is much flat land and rich soil
- 16. a natural resource that takes a long time to replace or cannot be replaced after it is used
- 17. to bring water in through pipes
- 18. to dig for materials
Down
- 1. sun-dried bricks used to build shelters and other buildings
- 2. the height of land above sea level
- 3. the washing away of soil by rain, wind, and nearby rivers
- 6. the daily conditions outside
- 7. a place where many kinds of factories are located
- 9. a natural resource that can be replaced in a short time
- 10. the weather that a place has over a long period
- 13. one of the seven largest areas on Earth
- 15. to save and protect something
