BIOINDICATORS OF POLLUTION

2. also known as bioamplification or biological magnification
6. occurs through a chemical reaction that produces light energy within an organism's body.
7. Frogs are considered accurate indicators of environmental stress and the health of the __________
8. have been widely documented as useful indicators of environmental water quality because of their differential sensitivity to pollution.
11. They are the only organism on the planet with cell walls composed of transparent, opaline silica.
13. Indicator for heavy metal pollution of water.
15. are seeking data on fireflies worldwide, to see whether their populations are increasing or decreasing.
16. have the ability to indicate indirect biotic effects of pollutants when many physical or chemical measurements cannot.
19. is the gradual accumulation of substances, such as pesticides, or other chemicals in an organism.
20. are a significant component of biological monitoring programs for assessing water quality.

1. The increasing concentration of a substance in the tissues of tolerant organisms at successively higher levels in a food chain.
3. can live in extreme conditions, but they hate pollution
4. The presence or absence of certain plant or vegetative life in an ecosystem.
5. microorganisms are diverse group of organisms found in large quantities and are easier to detect and sample.
9. is used as bioindicatorto determine acute toxicity
10. Abundance of ______ indicates sewage and heavy metal pollution of water
12. are often used as bioindicators because they are very sensitive to pollution, excess nutrients, increased turbidity, chlorine etc.
14. are considered accurate indicators of environmental stress and the health of biosphere as a whole
17. are a bioindicator, a species ecologists monitor to help gauge how healthy an ecosystem is.
18. Earthworms act as an early warning system in monitoring changes in this type of pollution