Across
- 2. a change in hereditary material
- 4. very painfully
- 6. sameness; boredom
- 9. disastrous
- 12. something that causes something to happen
- 13. sad, pitiful, abandoned
- 14. no longer in existence
- 16. the gases surrounding a planet
- 17. man-made waterways mainly used for transport
- 18. scary or dangerous
Down
- 1. among or between stars
- 3. a picture made from small pieces
- 5. huge
- 7. having to do with planets
- 8. occurring in the mind without one's full awareness
- 10. lasts a long time or happens often
- 11. covered in a liquid; underwater
- 15. to make a home in a new place far away