Across
- 3. empty
- 6. Bacterial infection of the lungs
- 8. to break up, disturb
- 9. A term that typically describes a species that no longer has any known living individuals.
- 10. A biological community of interacting organisms and their physical environment.
- 11. pertaining to respiration
- 12. all the plants and trees in an area
- 13. episodes of breathing difficulty due to narrowed or obstructed airways
- 14. great damage or ruin
Down
- 1. not wanted
- 2. inflammation of the bronchial tubes
- 4. the action or fact of treating something unfairly in order to benefit from them
- 5. A gradual increase in average global temperature
- 7. diseases illnesses that are easily passed from one person to another