Across
- 2. The gas filled in electric bulb
- 4. positive electrode
- 5. latin name of gold
- 6. Interaction between living and non- living
- 8. person who studies physics
- 9. portion of the brain concerned with intelligence
Down
- 1. science of sound
- 2. Farming of useful aquatic animals
- 3. fruit develops from
- 7. king of acids