The color of a kittenâs fur can give clues to its sex. Certain colors, like calico (large patches of black, white, and orange) and tortoiseshell (marbled black, orange/brown, and sometimes white), are carried on the X chromosome and require two X chromosomes to appear.
Tungsten, also known as wolfram, is a chemical element with the chemical symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten directly translatable to heavy stone, though the name is volfram in Swedish to distinguish it from Scheelite, in Swedish alternatively named tungsten.
Word origin: Gallium comes from Gallia, the Latin name for France. It also has origins in the Latin word gallus, a translation of Lecoq, the term for a rooster, and also the first name of the scientist who discovered the element. Discovery: Chemist Lecoq de Boisbaudran discovered the element spectroscopically in 1875.