1 How long does ground beef last in the freezer for safety purposes? 2  The freezer time shown is for best quality only â foods kept constantly frozen at 0Â° F will keep safe indefinitely.
Lines of Longitude run from pole to pole (north-south) all the way around the globe and tell you your distance east or west from the âPrime Meridianâ. The Prime Meridian is Longitude Zero, and is a reference line from which longitude east and west are measured.
The latitude longitude coordinate system uses angular measurements to describe a position on the surface of the earth. The system has been in use, with little change, since the astronomer Ptolemy used them in his first world atlas in A.D. 150.