A wind with a direction designated as 90° is blowing from the

A. North
B. South
C. East
D. West

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:

10 years is the answer

the answer is d.) potassium