Across
- 4. where animals live
- 5. opposite of sharp
- 9. total destruction
- 10. opposite of acute
- 11. without value
- 13. the spread of he deserts
- 17. to hunt illegally
- 18. the reduction in the ozone layer
- 19. a long piece of work which forms your PhD
- 20. effect
- 21. arm joint
Down
- 1. baby cat
- 2. animals on a farm
- 3. below your arm
- 6. a vision caused by drugs
- 7. encouragement to change behaviour
- 8. around pupil
- 12. not allowed
- 14. protect
- 15. vary
- 16. possible/practical