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.
Tungsten (pronounced /tÊÅstÉn/), also known as  wolfram (/wlfrÉm/), is a chemical element with the  chemical symbol W and atomic number 74. Tungsten is one of the  heav â¦ iest materials after gold, for the density of tungsten is 19.25  gâ¢cm3(near r.t.).    Tungsten is one of the Nonferrous Metals, and also it is as  molybdenum and rare earths which are Refractory Metals.   It is also used in eletrical bulbs as filament.