Posted by LILY on Thursday, November 29, 2012 at 11:11am.
HELP FAST!!!!!!!!!!!!!!!! If you see that a hotair 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

science  Manpreet, Thursday, November 29, 2012 at 11:20am
reference point

science  lily, Thursday, November 29, 2012 at 11:21am
thank you

science  Me, Thursday, January 9, 2014 at 3:06pm
D. Reference point

science  m j j, Monday, December 1, 2014 at 3:15pm
i agree its d
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