Question

Give reasons.
Contour lines are useful.​

Answer 1

Explanation:

Contour lines are imaginary lines that join points of equal altitude above the same reference level, the sealevel in most cases. The purpose of contour lines is to represent the tridimensional shape of the terrestrial surface on the bidimensional surface

Answer 2

Answer:

These contour lines are an important way of showing the rise and fall of the land on a map.contour lines show all the places that are the same height above sea level. They also tell us about the slope of the land.on a step slope,the lines are close together.