Across
- 3. a device that points North, South, etc
- 5. seriously at risk of extinction
- 7. not consistent, able to change
- 9. the process of being eroded
- 11. a repeated design
- 12. the plants of a particular region
Down
- 1. related to biology
- 2. sunny, rainy, windy, etc
- 4. study of the earth
- 6. being safe
- 8. person who studies science
- 10. a living organism that feeds on organic matter