Across
- 1. necessary for life
- 4. "not known" in disguise
- 6. graph of human population
- 7. expected type
- 8. ego another self
- 11. lasting a long time
- 12. solid sound
- 14. revive or bring back to live
- 16. powerful explosion
- 17. to rise above
Down
- 1. aliveness
- 2. to take turns
- 3. small objects revolving around Sun
- 5. powerful
- 6. study of human populations
- 9. without time
- 10. at the same time
- 11. free market economic system
- 13. abstract artistic style
- 15. excel