What is a contour line?
1️⃣ A line on a land joining points of equal height above or below sea level.
2️⃣ A place on a map joining points of equal height above or below sea level.
3️⃣ A place on a land joining points of equal height above or below sea level.
4️⃣ A line on a map joining points of equal height above or below sea level.
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- a line on a map joining points of equal height above or below sea level.
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