Question

contours show heights above the........​

Answer 1

Answer:

Answer: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

Answer 2

Any contour height measurement shows the height of the contour above mean sea level. For example : A contour marked 240 on a topographical map represents that the height of the points lying on the contour line is 240 m ABOVE MEAN SEA LEVEL