There are many apps within Android that are designed to function with a background process all the time. As far as I know there is no reliable way to keep some of these apps closed and furthermore you may actually be doing more harm than good by forcing them to close in the first place.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?