Location, place, and region, three of the five themes of geography, also are studied in one of the six essential elements of geography.
a.
place
b.
human systems
c.
the world in spatial terms
d.
movement

Location, place, and region, three of the five themes of geography, also are studied in the world in spatial terms, one of the six essential elements of geography. This element denotes the location of things in the world ( identifies where a place is located on Earth) and introduces the concepts of absolute location, which is the exact location and relative location (where a place is in location to another).

answer; they use longitude and latitude and   global grid system; good luck