Bioindicators of Pollution

2. Is the gradual accumulation of substances, such as pesticides, or other chemicals in an organism.
6. For a reaction to occur, a species must contain this molecule that, when it reacts with oxygen, produces light.
7. This fungus is believed to slowly suffocate frogs by attacking the skin through which they breathe.
10. These animals have been widely documented as useful indicators of environmental water quality because of their differential sensitivity to pollution.
15. Are often used as bioindicators because they are very sensitive to pollution, excess nutrients, increased turbidity, chlorine etc.
16. Are algae and fungi living symbiotically (they have to live together to survive).
17. These animals are considered accurate indicators of environmental stress and the health of biosphere as a whole.
18. Are algae that live in houses made of glass.
19. Living organisms that respond in an especially clear way to a change environment.
20. In places where no lichens are growing, it is often a sign that the air is heavily polluted with what?

1. Is the increasing concentration of a substance, such as a toxic chemical, in the tissues of tolerant organisms at successively higher levels in a food chain.
3. Are a bioindicator, a species ecologists monitor to help gauge how healthy an ecosystem is.
4. Type of bacteria that are used to test water for environmental toxins.
5. Are diverse group of organisms found in large quantities and are easier to detect and sample.
8. This animal act as an early warning system in monitoring changes in soil pollution.
9. Occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods.
11. Abundance of this plant indicates sewage and heavy metal pollution of water.
12. Are a significant component of biological monitoring programs for assessing water quality.
13. Indicate the presence of gold in the soil.
14. occurs through a chemical reaction that produces light energy within an organism's body.