Across
- 3. a person who studies living things
- 4. a medicine used to save lives because it destroys harmful bacteria and cures infections
- 6. a piece of writing about a person's life written by someone else
- 8. the study of the nervous system of living things and how it helps the living things learn and react
- 9. the zone of planet Earth where there is life (between the deep crust and the atmosphere)
- 10. the study of living things
Down
- 1. a diet thought to help people live longer because it focuses on natural foods
- 2. how two different living organisms live together and depend on each other
- 5. a piece of writing written by a person about his or her own life
- 7. the removal of tissue from the body fir diagnostic examination