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Season Three Research Files
Episode Eight
8:00pm-9:00pm
Topography is the graphic representation of the surface features of a place on a map which indicates land surfaces and elevations. Topographic overlays use symbols and coloring, with particular attention given to the shape and elevations of terrain. Elevations and depressions are portrayed by means of contour lines, hachures, shading, or coloring. This also helps indicate depths of water. Natural and human-made features, such as rivers, forests, urbanized areas, bridges, roads, and power lines are also indicated.
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