Across
- 4. using light to create pictures
- 6. a description of someone's life
- 7. to describe one's own life
- 8. the study of living things
- 9. a device to see things far away
Down
- 1. a description of how a language works
- 2. the study of the environment
- 3. to react to light
- 4. a device to see objects from underwater
- 5. to sign one's name to something