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From Longman Dictionary of Contemporary Englishbioindicatorbi‧o‧in‧di‧ca‧tor /ˌbaɪəʊˈɪndəkeɪtə $ ˌbaɪoʊˈɪndəkeɪtər/ noun [countable] technical  a small number of animals, plants, insects etc that are typical of all the animals, plants etc normally found in a particular area, which scientists study in order to get information about the whole area This insect-bacteria bioindicator is a reliable tool for assessing environmental damage to the country’s wetlands.
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