Across
- 2. Where the ozone layer lies
- 5. Energy from the sun's heat
- 7. The word for a process of events
- 8. All water on earth
- 9. Essential element in the earth for life
- 10. A gas that absorbs infrared radiation
Down
- 1. Third layer of the atmosphere, meteors burn up
- 3. A layer that absorbs harmful radiation
- 4. All life on earth
- 6. Protects the whole earth