bio, vit, viv

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Across
  1. 3. A person who lives through a difficult event or experience
  2. 6. Surgery on living animals; medical research that involves cutting into animals to study the organs, parts, or diseases
  3. 9. How two different organisms live together and depend on each other
  4. 10. The ability to continue living
  5. 12. The study of the nervous system of living things and how it helps the living things learn and react
  6. 13. The study of living things
  7. 14. A person who studies living things
  8. 16. The zone of planet earth where there is life (between the deep crust and the lower atmosphere)
  9. 17. Diet A diet thought to help you live longer because it focuses on natural foods
  10. 20. A medicine used to save lives because it destroys harmful bacteria and cures infections
Down
  1. 1. The removal of living tissue from the body for diagnostic examination
  2. 2. Full of life; fun; lively; animated
  3. 4. To bring something back after it was declined in condition or popularity; to breathe new life into something
  4. 5. Necessary or essential to life
  5. 7. A tablet of substances that are thought to promote a healthy life
  6. 8. A piece of writing about a person's life written by someone else
  7. 11. To bring back to life again
  8. 15. “As big as life”; brightly colored; daring
  9. 18. A piece of writing written by a person about his or her life
  10. 19. Quality or state of being full of life; state of being full of energy