Mechanical pencil Mechanical pencil A mechanical pencil (US English) or propelling pencil (UK English), also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" . The lead, often made of graphite, is not bonded to the outer casing, and can be mechanically extended as its point is worn away. Other names include microtip pencil, automatic pencil, drafting pencil, technical pencil, click pencil, pump pen, pump pencil, leadholder, pen pencil (Indian English), and lead pencil (Bangladeshi and American English). Mechanical pencils are used to provide lines of constant width without sharpening in technical drawing and
Lead poisoning in raptors has consumed a lead jig or sinker if a fishing line breaks. They may also try to attack a fish being pulled in by someone fishing/angling. There is also tackle that becomes disposed of or left behind in the water or on the fishing grounds, which birds may then accidentally consume. What makes this issue even worse is that lead is not an element that is quickly eliminated and cannot be degraded, as it is a very stable element. This results in a continuous accumulation of the concentration of lead in the environment over time, as there is more going