OZONE
Across
- 4. shield that covers earth atmosphere
- 6. a series of event to achieve a goal
- 7. a measure of cold or heat
- 9. a hot state in global climate
- 10. weather
Down
- 1. the gases that covers the earth
- 2. related to chemistry
- 3. harm
- 5. fall
- 8. to bring back from ruin