Water pollution

3. particles that attach to plant, soil, or water surfaces through rain, snow, or as gas
4. a large container that is connected to a house and receives its wastewater
8. rural areas often use this relatively small and simple sewage treatment system
10. phenomenon that kills organisms by drastically changing the water temperature
12. the main cause of oil pollution in the oceans
15. best indicator species that are harmless and live inside human and other animal intestines
16. human activities and other sources lead to the contamination of streams, rivers, lakes, oceans, and groundwater
18. phenomenon resulting in high levels of nitrogen and phosphorus, which adds an abundance of fertility to the soil
19. contaminates the soil where military rockets are tested
21. the fairly clear middle water layer

1. technique used on cargo ships and was designed to prevent future oil spills in the ocean
2. control organisms that pose a threat to crop production and human health
5. non chemical water pollution that occurs when human activities greatly change the water temperature
6. pollution that occurs in a distinct location Nonpointsource pollution that occurs in a diffuse area
7. heavy metal that contaminates water through pipes
9. their manufacture in the U.S ended in 1979 but still are present in the environment and can cause
11. anthropogenic inputs of nutrients leads to high levels of nutrients
13. anything that sinks to the bottom of septic tanks and forms solid waste
14. resulting from livestock operations and human activities, this is a major type of water pollution BOD less of this value indicates less pollution in a water body and a higher value indicates more pollution Deadzone areas that are very depleted of oxygen, resulting in little surviving organisms
17. scientists use organisms to tell if disease-carrying pathogens are present
20. a combination of pipes and lawns as part of the septic system Manurelagoon gross, human-made pools filled with manure from livestock