Across
- 3. river systems
- 4. Agriculture
- 9. harm living
- 10. hot weather
- 11. waste
- 13. largest source
- 14. batereia virus
- 16. nutrient
Down
- 1. human health
- 2. layers
- 5. carried into waterways
- 6. soil particles
- 7. inputs large area
- 8. human waste
- 12. clear water
- 15. overload