Across
- 5. - Study of minerals.
- 8. - Study of sea floor.
- 9. - Study of space.
- 10. - Study of weather.
- 11. - Study of living organisms.
- 12. - Study of marine organisms.
- 15. - Study of glaciers.
Down
- 1. - Study of reptiles.
- 2. - Study of water.
- 3. - Study of embryos.
- 4. - Study of blood.
- 6. - Study of freshwater.
- 7. - Study of insects.
- 13. - Study of fish.
- 14. - Study of heredity.