Water Pollution

1. when these occur they are very difficult to clean up
3. when an area of water has such a low amount of oxygen which makes it very hard for fish to survive.
8. the largest oil spill that occurred in Alaska which killed thousands of animals
10. when water flows through a city carrying sediment and trash
13. the step in a sewage treatment plant that filters out the sludge by it settling to the bottom
15. this is caused by ships sending long range sonar or load booms into the ocean which can cause distress in whales.
16. these control the about of bugs and pests on crops but can have a negative effect on human health
17. a metal that is found naturally in the Earth’s crust which can dissolve into the groundwater
18. the solid waste
20. a form of pollution that is caused by an change in water temperature
21. the amount of oxygen that a body of water required in order to thrive
22. this is released through the burning of coal
23. the container that holds all the wastewater produced by a house
24. this type of pollution causes the water to become cloudy and prevents plants and algae to grow

2. the act where there are regualtions put on the cleanliness of the water to make sure that it is safe for humans to drink
4. when a certain body of water beacome rich in nutrients
5. a specific point where the pollution is coming from
6. the place where all the livestock manure goes to
7. a metal that is found in pipes
9. when a body of water is contaminated by sediments and particles
11. when there is a large area that is contributing to the overall pollution
12. the technique used to contain an oil spill.
14. the step in a sewage treatment plant where the bacteria breaks down the sludge into smaller particles
19. if people are not connected to a city sewer system, they probably have this to treat their wastewater
20. a sudden change in water temperature that can cause the death of thousands of organims