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Chemistry 15 Online
OpenStudy (anonymous):

If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called? A. delta point B. distance system C. coordinate system D. reference point

OpenStudy (anonymous):

@iGreen @LiteNing1337

OpenStudy (anonymous):

@ganeshie8

OpenStudy (camerondoherty):

I think its ref. pt. Not 100% shure tho

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