Question

what are contour lines​

Answer 1

Answer:

Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level.  Numbers on the lines give the height in feet. (Sea level is zero.) Lines drawn closely together indicate that a slope is steep.

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Answer 2

Answer:

contour line is a line on a map representing am imaginary line on land surface,all points which are at same elevation above a datum plane.

Explanation:

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