What is another word for pollution indicator?
Pronunciation: [pəlˈuːʃən ˈɪndɪkˌe͡ɪtə] (IPA) 
"Pollution indicator" can be replaced by several synonyms, such as environmental biomarker, pollution tracer or pollutant marker. These terms refer to substances or characteristics used to determine the level or occurrence of pollution in a specific environment. Environmental biomarkers are used to indicate the presence or absence of pollutants in an organism, while pollution tracers help to identify and track sources of contamination. Pollutant markers are used to measure the levels of pollution in air, water, or soil. Regardless of the synonym used, the essential purpose is to identify and monitor pollution levels and their impact on the environment.
