Across
- 3. A place that produces big amounts of products
- 6. heat change that happens over long periods of time
- 9. state of matter
- 10. plant that shows climate with its layers
- 14. frozen water
- 16. bad or harmful chemicals intruding our air
- 17. big white mammal that lives in the arctic
- 18. refers to something sever
- 19. has three blades and make clean energy
- 20. toxic gas composed of three parts
Down
- 1. natures home for animals
- 2. growing crops
- 4. keeps plants warm
- 5. A very cold region
- 7. first president to start a clean energy plan
- 8. age an old cold time
- 11. fuel naturally sourced
- 12. gas that surrounds the earth
- 13. change A change that occurs over the years
- 15. taking down trees for wood and clearing land