Answer:
is used to define locations on a model of the surface of the earth
Explanation:
the GCS uses a netwirk of imaginary lines to define locations
The actions noted are those that anyone around the world can use to work together to use energy more efficiently.
I do most of those things now; I have trouble remembering to unplug items not in use.
D. Density
The bulk density of a planet will reflect the relative amounts of the materials the world is made of, regardless of what materials occur at the surface.