Aquatic Systems

2. Can determine how much dissolved oxygen there is.
5. Introduced through natural processes, such as nutrient cycles or by human activity.
7. A Prussian __________ is an example of an invasive species.
8. A common element tested in aquatic systems.
10. We tested this using a titration that turned blue then pink.
11. An example of a traditional medicine that is an indicator species for water quality.
13. Any species who are non-native to an area, but eventually take over because of their hardiness and rapid reproduction.
16. pH is a measure of __________ in the water.
17. __________ temperatures correspond to higher amounts of dissolved oxygen.
19. Water Quality _________ is a score that summarizes how healthy a water body is.
20. It is more likely that compounds, toxins, and nutrients will break down less in water with a __________ pH.

1. Ideal pH varies between aquatic ___________.
3. An example of a fur-bearing keystone species.
4. A higher Water Quality Index score indicates ____________ water quality.
6. Aquatic species that live near the __________ need more dissolved oxygen.
9. How clear the water is.
12. __________ mussels are example of an invasive species.
14. pH determines how __________ compounds are in the water.
15. __________ turbidity is very murky or unclear water.
18. Any species whose presence or absence in a water body reflects the quality of water.