Across
- 3. the animals of a particular region.
- 5. relating to the body.
- 7. to do with the environment.
- 9. the relations between elements of something complex.
- 10. relating or resulting from living organisms.
Down
- 1. the plants of a particular region.
- 2. relating to biology.
- 4. physical rather than biological.
- 6. the study of the physical features of the earth.
- 8. the process of being eroded.