Across
- 1. an organization that protects workers' rights
- 5. the basic material from which a product is made
- 8. a machine that separates cotton from its seeds
- 9. a machine that harvests crops
- 10. the time period from the late 1700s to the early 1800s marking the introduction of machinery and the growth of factories
- 11. a man-made river used for navigation and transporting water for crops and farming
- 12. cleanliness
- 13. a type of cloth or woven fabric
Down
- 2. uniform parts that can be easily made, installed and replaced
- 3. turning raw material (iron ore) into pure metal
- 4. an injected substance that prevents disease
- 6. clean, germ-free
- 7. household