Across
- 5. about to happen soon
- 7. continuing forever
- 10. a mark or sign left behind
- 11. harmless or not dangerous
- 13. an advanced human society
- 14. a word that comes before another
- 16. suggested based on evidence
Down
- 1. to make something better
- 2. received from the past
- 3. not typical or common
- 4. very powerful or intense
- 6. shaking of the surface of Mars
- 8. began or started
- 9. easily broken or damaged
- 12. honesty and strong moral principles
- 15. used unfairly for benefit