Question

which organisms are known as pollution indicator​

Answer 1

Explanation:

Examples of environmental, ecological, and biodiversity indicators can be found in many different organisms inhabiting many different environments. Lichens (a symbiosis among fungi, algae, and/or cyanobacteria) and bryophytes (mosses and liverworts) are often used to assess air pollution.

Answer 2

Lichens (a symbiosis among fungi, algae, and/or cyanobacteria) and bryophytes (mosses and liverworts) are often used to assess air pollution.

Indicator organisms are microorganisms whose presence in water indicates probable presence of pathogens (disease-causing organisms).