Which example is the site of reduction when the dry cell is operating?
O solid zinc layer
O cardboard separator
O negative terminal
S
O graphite rod
te

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: