Across
- 4. The study of butterflies and moths
- 10. The study of the immune system
- 12. The study of ants
- 13. The study of rays, usually ionizing radiation
- 14. The study of classification
- 16. The study of the skin
- 18. The study of medicine relating to women
- 19. The study of bacteria
- 20. The study of underground water
Down
- 1. The branch of pathology that studies diseases on the cellular level
- 2. The study of wood
- 3. The study of the moon
- 5. The study of periodic biological phenomena
- 6. The study of cancer
- 7. The study of the atmosphere
- 8. The study of animal diseases
- 9. The study of movement in relation to human anatomy
- 11. The study of neural diseases
- 15. The study of the geology of celestial bodies
- 17. The study of volcanoes