Across
- 2. terrestrial region
- 3. no light
- 4. no light
- 9. group of different kinds of species living together
- 10. where trenches are found
- 12. some light shines here
- 13. the Earth
Down
- 1. group of same species
- 5. 0-200 meters
- 6. one species
- 7. chemosynthesis begins
- 8. group of different kinds of species with physical environment
- 11. means light