But they come with their own little USB adapters. Lol. dont trust any computer without bluetooth built-in from default, this is like asking if you want a notebook without wi-fi. Bluettoh mouses have the advantage that they dont use 1 USB port, as bluetooth is a hidden antena within the notebook.
Definition of arkose. : a sandstone characterized by feldspar fragments that is derived from granite or gneiss which has disintegrated rapidly.
Angle of repose. (Physics) the inclination of a plane at which a body placed on the plane would remain at rest, or if in motion would roll or slide down with uniform velocity; the angle at which the various kinds of earth will stand when abandoned to themselves. Noun. 1.