bio, vit, viv

1234567891011121314151617181920
Across
  1. 2. quality or state being full of life
  2. 7. a piece of writing about a person's life written by someone else
  3. 9. surgery on living animals;medical research that involves cutting into animals to study organs
  4. 10. to bring something back after it declined in condition or popularity
  5. 14. diet a diet thought to help people live longer because it focuses on natural foods
  6. 15. a medicine used to save lives because it destroys harmful bacteria and cures infections
  7. 16. necessary or essential to life
  8. 18. the study of the nervous system of living things and how it helps the living things learn and react
  9. 19. a person who lives through a difficult event or experience
Down
  1. 1. the zone of planet Earth where there is life
  2. 3. a piece of writing written by a person about his or her own life
  3. 4. to bring back to life again
  4. 5. how two different living organisms live together and depend on each other
  5. 6. a tablet of substances that are thought to promote healthy life
  6. 8. the ability to continue living
  7. 11. full of life; fun
  8. 12. the study of living things
  9. 13. a person who studies living things
  10. 17. the removal of living tissue from the body for diagnostic examination
  11. 20. "as big as life";brightly colored;daring