laurynmccoy07 laurynmccoy07

12-02-2020
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How is using the stairs similar to and different from using a ramp to get into a building?

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samara20049 samara20049

12-02-2020

The difference between a step and a stair. A step is the portion of movement that changes height by a single riser where as a stair is the change in height or elevation of two or more risers.

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