Across
- 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.
Down
- 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