Across
- 3. waste
- 6. in danger of disappearing forever
- 8. cutting down rainforests
- 9. variety in species
- 10. disappear forever
Down
- 1. makes trees grow more slowly
- 2. the earth's atmosphere heats up
- 4. a layer in the atmosphere
- 5. the effect trapping gases in the atmosphere
- 7. a form of air pollution in cities