Across
- 6. caused by things like oil
- 10. pollution caused by feces
- 11. you can see where its coming from
- 12. an area where water can easily flood
- 13. how good the water is
- 16. a small river or creek the goes to a bigger one
- 17. where to watershed seperate
Down
- 1. you don't know where it came from
- 2. caused by fertilizers
- 3. caused by digging or removing trees
- 4. when the earth's crust is slowly broken down
- 5. rain, snow, or hail
- 7. water flows down a hill into another body of water
- 8. worlds longest river that flows north
- 9. water under ground
- 14. underground water storage
- 15. an area where all water flows