Across
- 3. (2 words no space)water that has material in it that is harmful to species that live there
- 5. any body of water that runs into another body of water
- 6. (2 words no spaces)increased by photosynthesis and
- 7. a unique habitat created by the mixing of fresh water with salt water.
- 8. anything that kills a pest
- 11. all watersheds empty into this
- 13. source (2 words no space) pollution coming from one identifiable source
- 15. the build up of a substance (usually a toxin) as it travels up the food chain.
- 16. fish that require high DO,healthy, clear, unpolluted water
- 17. (3 words no spaces) pollution that comes from many sources
- 20. characterized by warm water, lower levels of DO and slower flowing
- 21. portions of a watershed that filters water and has saturated soils
- 24. boundary or high elevation between two watersheds
- 27. (2 words no spaces)characterized by cold water, high DO, low turbidity and high minerals
Down
- 1. lots of this will reduce the amount of DO (two words, no space)
- 2. (2 words no space)insects that are resistant to pesticides
- 3. (3 words no spaces)massive area of plastic waste floating in ocean
- 4. all the water in this flows to the same place
- 9. changing the pH of an ecosystem would be an example of this factor
- 10. measures the amount of minerals in water
- 12. if an invasive species being added to an aquatic ecosystem would be an example of this factor
- 14. process that adds oxygen to water.
- 18. water with a pH of 7
- 19. measures the cloudiness of water
- 22. describes nutrient loading, algae populations explosions and excessive decomposition
- 23. physical factor that can alter the amount of DO in water
- 25. does not break down when it gets into an ecosystem
- 26. (2 words no spaces)water lacking oxygen and productivity due to nutrient loading