“…Bioindicators can be further distinguished into four categories depending on the application, namely ecological, environmental, biodiversity, and pollution bioindicators [ 145 ]. A. mellifera represents, together with its products, the most complete biosensor (bioindicator and bioaccumulator), which can provide a considerable amount of data on the state of health of the environment [ 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 ]. Each forager bee manages to cover a foraging distance of more than 3 km from the hive and, in some cases, the area covered can be up to 100 km 2 [ 156 , 157 ].…”