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 âMain Menuâ contains links to all of the configuration options of the Router: Wireless Setup (explained in chapter 4 of this manual), Network Connections. (chapter 5), Security (chapter 6), Parental Control (chapter 7), Quality of. Service (appendix A), Advanced (chapter 8), and System Monitoring (chapter 9).