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Biology 15 Online
OpenStudy (anonymous):

igneous rocks that are light colored and have a lower density

OpenStudy (anonymous):

Volcanic ash, pumice or rhyolite

OpenStudy (anonymous):

\[\huge \color{green}{Welcome~ To~ OS!}\]

OpenStudy (rina.r):

WELCOME TO OS:) This will help u! http://wiki.answers.com/Q/What_igneous_rocks_are_lower_density_and_lighter_in_color?#slide=2

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