Some metropolitan areas contain metropolitan divisions. Two metropolitan divisions exist within the DallasâFort WorthâArlington MSA. The term metropolitan division is used to refer to a county or group of counties within a metropolitan area that has a population core of at least 2.5 million.
The bees carry the propolis back to their hives and mix it with their salivary secretions and wax flakes. Propolis contains 55% resins and balsams, 30% beeswax, 10% etheric oils, and 5% pollen.
Bee propolis is a sticky, brown substance sometimes known as bee glue. The honey bees gather tree resin, the main ingredient in propolis, from buds and cracks in the bark. The bees add salivary secretions to the resin by chewing on it and add beeswax to the mix. Propolis has a little pollen in it, too. When analyzed, propolis contains about 50% resin, 30% wax and oils, 10% salivary secretions, 5% pollen, and 5% amino acids, vitamins, and minerals. The honey bee workers use propolis as a construction material, similar to plaster or caulk.