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.
Thread size is measured in thickness, but the method of measurement often differs from brand to brand. The four most common ways to measure thread are listed below. 1. Weight: Weight measurement, designated as âwtâ, uses a fixed weight system. The âweightâ of the thread is actually a length measurement, determined by measuring the length of 1 gram of thread. The higher the weight number, the lighter the thread. For example, a thread labeled 60 wt. means that 60 meters of the thread weigh 1 gram.