**4. Honey bee as bioindicator**

Honey bee has been studied extensively as bioindicator of metal pollution [34] due to their diverse foraging activity. Di Fiore *et al*. (2022) had suggested the utilization of honey bees as bioindicator of metal pollution to assess the air qualities of different region [35]. Various characteristics of honey bee including sensitivity to the pollutant elements, extensive flying capacity, elevated rate of reproduction and utilization of

product (honey) make them as bioindicator species. They are the pollinated insects that presented efficient monitoring protocols at low cost [36].
