Across
- 5. existing without human
- 7. gass
- 9. opposite of fast
- 10. type of gas in the air extinciones animals dying out climatico weather
- 11. temperature going up
Down
- 1. animals dying out
- 2. the layer of gases on
- 3. weather
- 4. the world
- 6. the measurement of how
- 8. something that is hard
- 12. what green house gases