Across
- 2. the path on which earth revolves around the sun
- 5. imaginary line on which earth spins
- 7. it causes seasons
- 8. layer of air that surrounds the earth
Down
- 1. the gas we breathe
- 3. it causes day and night
- 4. 1/4th of Earth is covered by it
- 6. things useful to fulfill human needs