Across
- 4. Earth's highest waterfalls
- 6. Earth's only natural satellite
- 8. the highest layer of the atmosphere
- 11. 77% of Air
- 12. the lowest layer of the atmosphere
- 13. the blue planet
Down
- 1. Earth's coldest place
- 2. another term for Chlorofluorocarbon
- 3. another term for sun's harmful rays
- 5. layer where three atoms of Oxygen are found
- 6. Earth's highest mountain
- 7. Earth's hottest place
- 8. Goddess of the Earth
- 9. three atoms of Oxygen
- 10. ozone and air pollution combine