The BVD stands for Back Vertex Distance, this is a measurement that is included on any prescription where the sphere or cylinder powers are higher than + or - 5.00D and to a lesser extent some prescriptions where it is less than this power.
Winged Drone | Alate | Male Ant. Drones are the only male ants in a colony. They are born from un-fertilized eggs. Drones are not like typical ants. They donât do any work in their nests, and they look more like wasps than ants. They are reproductive winged ants and so are alates.
Anteater is a common name for the four extant mammal species of the suborder Vermilingua (meaning worm tongue) commonly known for eating ants and termites.The individual species have other names in English and other languages. Together with the sloths, they are within the order Pilosa.he name anteater is also colloquially applied to the unrelated aardvark, numbat, echidnas, pangolins and some members of the Oecobiidae.