Honey bee mating is one of the most dramatic examples of sexual suicide in the insect world. Honey bee sex occurs in mid-air, when the queen flies out in search of mates. Drones compete for the chance to mate with their queen, swarming around her as she flies.
What is Carat Total Weight And Why Is It Used? The abbreviations âCTWâ, âCWTâ, âTWâ and âTDWâ all mean the same thing. Carat total weight or total diamond weight represents the weight summation of all the diamonds on that piece of jewelry. When you come across jewelry using CTW in their description, be sure that you check the sizes of diamonds used. I will explain why in a moment.
What do those barely discernible numbers inside a ring or on the back of a charm mean? The value of jewelry made from precious metals is determined by the purity of the gold, silver, or platinum it contains. The number found on jewelry is a karat hallmark and tells you how much of a metal is in that piece. A hallmark is an indication of a piece of jewelryâs precious metal content. The karat stamp has been used in European countries since the 14th century.