Water Quality

2. generally used to refer to the ability of organisms to withstand pollution
3. the collective total mass of an organism, population, community, or ecosystem
6. measure of how well a water sample conducts electricity
9. an invertebrate that is large enough to be seen without the use of a microscope
10. a measure of the ability of a water sample to neutralize acids and bases to maintain a stable pH level
12. the total number of species collected in a sample or community
14. bottom-dwelling organisms living below the water surface on the substrate
15. an organism which primarily obtains energy from consuming other living nonplant organisms

1. the amount of heat per unit required to raise the temperature of a material by one degree celsius
4. a solution that has more hydroxide ions than hydrogen ions
5. a hypothetical system used to describe patterns in the various ways that living and non-living things interact
7. the most upstream segments of streams
8. the concentration of free molecular oxygen dissolved in water
11. a solution that has more hydrogen ions than it does hydroxide ions.
13. measurable characteristics that may be used to explain biological systems
15. the hydrogen ion concentration of hydroxide ions when they are dissolved in water