Explanation:

What is Bioindicator?
A bioindicator is a living organism that gives us an idea of the health of an ecosystem. Some organisms are very sensitive to pollution in their environment, so if pollutants are present, the organism may change its morphology-physiology or behaviour, or it could even die.
The information can be deduced through the study of:
1. their content of certain elements or compounds
2. their morphological or cellular structure
3. metabolic biochemical processes
4. behaviour
5. population structure(s)
Bioindicators can be plants, animals or microorganisms
?There are several types of plant and fungi biomonitors, including mosses, lichens, tree bark, bark pockets, tree rings, leaves, and fungi.
?Amphibians, particularly anurans which consist of frogs and toads, are increasingly used as bioindicators of contaminant accumulation in pollution studies.
THINK!
?Biosignature
?Ecological Indicator