Across
- 1. person who lives through a difficult event or experience
- 6. a piece of writing about a person's life wrtten by someone else
- 9. necessary or essential to life
- 10. the zone of planet Earth where there is life
- 11. a person who studies living things
- 14. the removal of living tissue from the body for diagnostic examination
- 16. the study of living things
- 17. ability to continue living
- 19. tablet of substances that are thought to promote a healthy life
- 20. surgery on living animals; research that involves cutting into animals to study organs
Down
- 2. quality or state of being full of life; state of being full of energy
- 3. a medicine used to save lives because it destroys harmful bacteria
- 4. "as big as life"; brightly colored; daring
- 5. the study of the nervous system of living things and how it helps the living things learn & react
- 7. a piece of writing written by a person about his or her own life
- 8. bring something back after it declined in condition or popularity
- 12. full of life; lively; animated
- 13. a diet thought to help people live longer because it focuses on natural foods
- 15. how two different living organisms live together and depend on each other
- 18. bring back to life again