Radon is a gas that occurs naturally from the breakdownâor the radioactive decayâof uranium. Rocks, soil, and in some cases groundwater can all contain uranium.Because radon comes from so many sources, people are easily exposed to it.adon is an odorless, colorless, radioactive gas. It is also the second leading cause of lung cancer in the United States.
File Menu in MS Excel: File menu is the first menu in the MS Excel menu bar. It functions the file management and importing from external sources to MS Excel. The File menu allows one to open, save, close, print and so on in MS Excel. It gives the users options to save the workbook, open new workbook and so on.
The term menu is used different ways in different places. In France a menu is a fixed price list of what is being served in what order, the menu is set in other words. Ordering a la carte means you are ordering dishes off the set menu on offer. In most english speaking countries a menu is the list of food that can be ordered in a restaurant, some restaurants offer a set menu or a prix fixe (fixed price) menu which is the same thing as french menu.