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Biology 9 Online
OpenStudy (anonymous):

Diffusion is the movement of a substance A) Only through the lipid bilayer B) Only in liquids C) Only in air D) From an area of high concentration to an area of low concentration

OpenStudy (anonymous):

http://en.wikipedia.org/wiki/Diffusion its D simple

OpenStudy (anonymous):

And Give Medals too . its like our award @TRAPaholic_

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