Example: A path from a dry lake bed starts at an elevation of 212 1··2ft relative to sea level. The path ends at an elevation of 60 1··3ft above sea level. What number represents the change in elevation from the start to the end of the path? You can subtract to find the change in elevation. Question: you can also find 12 1··22 60 1··35 272 5··6. What information does that give you about the path in the Example?
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