Benefits Of Pesticides. 1  Benefits Of Pesticides Pesticides can more commonly be called as crop protection products and is used to describe substances that are used to control organisms that cause diseases. If not controlled they cause damage to animals, plants and property.
Best Answer: A pen blank is a piece of wood, acrylic, or whatever that has a long center hole drilled in it. Then a person can carve or use a lathe on the outside to make it into a pen. They add the insides of a ballpoint, gel, or ink pen to it and voila--a custom pen!! : P.
Quick Answer. A light pen is a light-sensitive computer input pointing device shaped like a wand. It is connected to a visual display unit or CRT monitor and allows the user to modify data and text or make menu selections on the screen. Light pens became popular during the 1980s.