"Biomonitor" refers to the measurement of biological indicators to assess environmental health. There are several synonyms for this term, including "biological monitoring," "bioassessment," "biotic monitoring," and "ecological monitoring." All these terms have a common goal - to evaluate the state of the environment and to identify changes that may affect the quality of life for humans and other species. Biomonitoring can be performed at different levels, from the individual organism to the ecosystem, and can provide crucial data for effective environmental management and decision-making. The use of biomonitoring techniques is vital in our efforts to protect and conserve our natural resources and ensure a sustainable future.