Across
- 3. electriceel
- 4. cichlid
- 9. sealamprey
- 12. payara
- 13. cohesive
- 15. density
- 17. watershed
- 19. eutrophication
- 22. marsupials
- 24. groundwater
- 29. horus
- 30. amphibians
- 31. lakesuperior
- 32. magma
- 33. stromatolite
Down
- 1. invertebrates
- 2. baypipefish
- 5. cownoseray
- 6. oxygen
- 7. snake
- 8. chemistry
- 10. placoderms
- 11. seas
- 14. vegetation
- 16. billions
- 18. estuary
- 20. pufferfish
- 21. belugastergeon
- 23. sturgeon
- 24. goldfish
- 25. mutualistic
- 26. ballpython
- 27. nutrients
- 28. constrictor