Water Pollution

3. these control the about of bugs and pests on crops but can have a negative effect on human health
6. when a body of water is contaminated by sediments and particles
7. a specific point where the pollution is coming from
8. the amount of oxygen that a body of water required in order to thrive
10. the step in a sewage treatment plant that filters out the sludge by it settling to the bottom
11. this is released through the burning of coal
13. this is caused by ships sending long range sonar or load booms into the ocean which can cause distress in whales.
14. when an area of water has such a low amount of oxygen which makes it very hard for fish to survive.
16. harmful chemicals used for rocket fuel
18. the step in a sewage treatment plant where the bacteria breaks down the sludge into smaller particles
21. a form of pollution that is caused by an change in water temperature
22. if people are not connected to a city sewer system, they probably have this to treat their wastewater
23. the place where all the livestock manure goes to
24. the technique used to contain an oil spill.
26. the act where there are regualtions put on the cleanliness of the water to make sure that it is safe for humans to drink

1. when there is a large area that is contributing to the overall pollution
2. a metal that is found naturally in the Earth’s crust which can dissolve into the groundwater
4. the solid waste
5. when a certain body of water beacome rich in nutrients
9. when these occur they are very difficult to clean up
12. a sudden change in water temperature that can cause the death of thousands of organims
15. the largest oil spill that occurred in Alaska which killed thousands of animals
17. the container that holds all the wastewater produced by a house
19. when water flows through a city carrying sediment and trash
20. this type of pollution causes the water to become cloudy and prevents plants and algae to grow
25. a metal that is found in pipes