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.
Propolis is a natural resin collected from the buds of conifers and other trees by honeybees. It is used by bees to seal walls and strengthen combs of hives, as well as to embalm dead invaders. It is a sticky, greenish-brown mass with a slight aromatic odor. Slideshow.