Climate Change

5. A substance that pollutes something.
6. The activities associated with the governance.
8. Become or make greater in size, amount, intensity, or degree.
13. An event causing great and often sudden damage or suffering; a disaster.
15. A biological community of interacting organisms.
16. Degree or thermal level or the atmosphere.
17. The planet on which we live.
18. Especially a person as distinguished from an animal or (in science fiction) an alien.
19. The fact or process of a species, family, or other group of animals or plants becoming extinct.
21. A substance or matter in a state in which it will expand freely.
22. Name of the effect caused by the concentration of gases in the atmosphere.

1. The weather conditions prevailing in an area in general or over a long period.
2. Fuel formed by natural processes.
3. When an area or region experiences below-normal precipitation.
4. The production and discharge of something, especially gas or radiation.
7. Make or become warm.
8. Economic activity concerned with the processing of raw materials.
9. The envelope of gases surrounding the earth or another planet.
10. A statement of an intention to inflict damage.
11. The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
12. A slowly moving mass or river of ice formed by the accumulation and compaction of snow.
14. The action of clearing a wide area of trees.
20. A colorless unstable toxic gas with a pungent odor and powerful oxidizing.