Across
- 5. microorganisms
- 6. study of cells at the molecular level
- 8. viruses
- 10. tissues
- 15. study of plants
- 16. study of fungi
- 17. nature and the cause of diseases
- 19. animals
- 21. reptiles and amphibians
- 22. bacteria
Down
- 1. worms
- 2. birds
- 3. mammals
- 4. fossils
- 7. origin of organisms over time
- 9. relationship between living things and the environment
- 11. classification of living things
- 12. insects
- 13. study of fishes
- 14. normal functions of living things
- 18. internal structure of living things
- 20. heredity and variation