Across
- 2. hen
- 4. integration
- 6. systems
- 7. disease
- 9. and watering systems
- 10. disease
- 13. house
- 14. science
- 16. production
Down
- 1. bronchitis
- 3. house
- 5. a seek and find puzzle or a crossword puzzle on paper to exchange with a classmate.
- 8. electrical generators
- 11. injection
- 12. cholera
- 15. roundworms