Across
- 5. the study of Mars
- 6. the study of present-day landforms
- 8. the study of past cultures
- 10. the study of trees
- 11. the study of dogs
- 12. the study of mammals
Down
- 1. the study of origin of life
- 2. the study of geology of celestial bodies
- 3. the study of weather
- 4. the study of flies
- 7. the study of the characteristics of the skull
- 9. the study of water