Across
- 3. the study of countries, land, sea, climate
- 6. the earth at it's centre
- 8. air
- 9. round
Down
- 1. living beings and the environment
- 2. watery part of the earth
- 4. chemistry
- 5. the study of earth's surface
- 6. the field of geophysics
- 7. half of the earth