Question

what are contour lines​

Answer 1

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Plz mark brainlist :)

a line on a map joining points of equal height above or below sea level. "every valley bottom below a certain contour line must have been soggy and at times impassable"

Answer 2

Answer:

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line. ... Sharp contour points indicate pointed ridges.

OR

Contour Line - Noun

Plural Noun: Contour Lines

A line on a map joining points of equal height above or below sea level.

"Every valley bottom below a certain contour line must have been soggy and at times impassable"