Across
- 1. a place where machines are used to do work
- 3. life on a farm in the country
- 5. an organized group of workers
- 7. used to do work faster
- 8. a black rock that created electricity when burned
- 11. dirty air, water, and ground
- 13. supplies taken from the earth
Down
- 2. process where people come to another country to live
- 4. life in the city
- 6. a boat that burns coal to move
- 9. when labor unions stop working to get what they want
- 10. energy created by burning coal
- 12. a kind of transportation that burns coal and runs on a track