| 21. | Both were designed to run along a contour line.
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| 22. | Contour lines are curves that connect contiguous points of the same altitude ( isohypse ).
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| 23. | In economics, contour lines can be used to describe features which vary quantitatively over space.
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| 24. | Depth contour lines show the shape of underwater relief.
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| 25. | Except for minor irregularities caused by erosion, any contour line drawn is practically a circle.
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| 26. | Positive values denote westerly winds and the contour line is at 0 m / s.
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| 27. | Meteorological contour lines are based on generalization from the point data received from weather stations.
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| 28. | Black " ink " outlines and contour lines can be created using a variety of methods.
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| 29. | The result is that the object is drawn with a black outline and interior contour lines.
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| 30. | It combines surface maps with topographical maps, which represent changes in the terrain with contour lines.
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