An imaginary circle around the earth, equally distant from the north pole and the south pole
cartographer
location
equator
longitude

An imaginery circle around the earth, equidistant from both poles, is the equator. A cartographer is one who makes maps. Location is a specific point on a map. Longitude lines (meridians) are imaginary lines running vertically and measure distance east and west of the Prime Meridian.

Answer b is the answet

Answer the collision of tectonic plates;