Climate Change

3. Degree or thermal level or the atmosphere.
5. The weather conditions prevailing in an area in general or over a long period.
7. Name of the effect caused by the concentration of gases in the atmosphere.
10. A biological community of interacting organisms.
11. The activities associated with the governance.
16. The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
18. A statement of an intention to inflict damage.
19. When an area or region experiences below-normal precipitation.
20. The action of clearing a wide area of trees.
21. A colorless unstable toxic gas with a pungent odor and powerful oxidizing.
23. A substance or matter in a state in which it will expand freely.

1. The envelope of gases surrounding the earth or another planet.
2. Especially a person as distinguished from an animal or (in science fiction) an alien.
4. A slowly moving mass or river of ice formed by the accumulation and compaction of snow.
6. An event causing great and often sudden damage or suffering; a disaster.
8. The fact or process of a species, family, or other group of animals or plants becoming extinct.
9. A substance that pollutes something.
12. Economic activity concerned with the processing of raw materials.
13. The planet on which we live.
14. Become or make greater in size, amount, intensity, or degree.
15. Make or become warm.
17. The production and discharge of something, especially gas or radiation.
22. Fuel formed by natural processes.