Cuál de los siguientes símbolos representa un elemento? a. CO b. n c. Po d. nE

C. Po

Explanation:

Po es el elemento de potasio en la tabla periódica.

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:

gas

explanation:

smoke is the matter of a gas