Question

lines marked on maps to indicate geographical boundaries​

Answer 1

Answer:

A common way to show relief is contour lines, also called topographic lines. These are lines that connect points that have equal elevation. If a map shows a large enough area, contour lines form circles. ... As elevation decreases, contour line circles indicate a depression in the earth, such as a basin.

Explanation:

Answer 2

A common way to show relief is contour lines, also called topographic lines. These are lines that connect points that have equal elevation. If a map shows a large enough area, contour lines form circles. ... As elevation decreases, contour line circles indicate a depression in the earth, such as a basin.