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Protozoans form sediment and are considered an indicator species.
Indicator organisms are organisms that are sensitive to changes in the environment. When populations of indicator species changes, it can signal a change in the environment that will eventually effect other species as well.
Indicator organisms are organisms that are sensitive to changes in the environment. When populations of indicator species changes, it can signal a change in the environment that will eventually effect other species as well.
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Lichens are a good indicator species for acid rain. Lichens absorb water and nutrients from the air. They absorb the nutrients that they need from the water. Rainwater contains enough sulphur dioxide to make them stop growing.
It depends what animal exactly we are talking about. Generally, animals are harmed by air pollution, however, certain species, indicator species that indicate high levels of pollution, can only survive in highly polluted areas.
biological indicator of air pollution is lichene. it is a best example of air pollution indicator.
cuz
Well air and water pollution have a lot to do with endangered species. If the animal is lacking clean water to drink and cllean air to breath it can take a toll on its health, just as it can a human.
Indicator Species
some are bugs
Protists