Bioindicators

3. Earthworms - Organisms used to monitor soil pollution and toxicity.
4. Bioluminescent- Microorganisms that produce light and are used to test water for toxins.
7. Microscopic algae with silica walls, indicators of water quality.
8. The presence of harmful substances in the environment.
9. Aquatic organisms like Escherichia coli, indicating fecal contamination.
10. Water - Fish are widely documented as indicators of this environmental quality.
12. Organism living in symbiosis, sensitive to sulfur dioxide pollution
13. Overgrowth of algae due to excess nutrients in water bodies
16. Animals used to indicate environmental change or pollution.
19. Sensitive organisms indicating soil contamination.

1. A group of animals, including frogs, used to assess ecosystem health.
2. Lower plants significant for biological monitoring of water quality.
5. plants -Group including species like Caesalpinia pulcherrima and Cynodon dactylon that indicate heavy metal pollution.
6. - Aquatic organisms like insect larvae used to assess water quality.
9. - Unicellular algae with silica walls used as indicators of pollution.
11. Fireflies -Insects that serve as bioindicators of ecosystem health.
14. - Plants that absorb large amounts of heavy metals from soil.
15. Bioaccumulation -The gradual accumulation of pollutants in organisms over time.
17. -Type of gas often tested in air quality monitoring.
18. Frogs -Amphibians used as indicators of environmental health.