Across
- 1. The decomposition of wastewater
- 4. a species that can tell if pathogens are present or not
- 5. this metal is found naturally in groundwater
- 9. underground pipes laid out below the ground
- 11. a group of harmless microorganisms that serve as indicator species
- 13. it is found in pipes and it pollutes water
- 16. a law that creates legislation to keep water as clean as possible
- 19. when waste water collects at the bottom and creates a solid
- 20. they are the "forever" chemicals
- 21. a layer of clear water that is found in the middle of a septic tank
- 23. it is in fish and if you eat to much it can kill you
- 26. The largest oil rig spill
Down
- 2. a place like a city with big lawns that creates pollution
- 3. the standard for safe drinking water
- 6. a species where you can see how they are doing to determine how an environment is doing
- 7. The biggest oil spill from a boat
- 8. When water has an increase in fertility due to anthropogenic inputs
- 10. The amount of oxygen a certain amount of water uses
- 12. a way of keeping in oil by putting a ring around it
- 14. having too much oxygen creates this which then can kill a lot of fish and animals
- 15. a system normally used in homes in rural areas where your waste goes
- 17. water that is created by us
- 18. solid waste from wastewater
- 22. the location in which pollution is produced
- 24. places with a low about of oxygen that can kill certain fish
- 25. a large container that people's waste goes into if they have a septic system