Wikipedia talk:Reference desk archive/Science/November 2005

From Wikipedia, the free encyclopedia

You have new messages (last change).

artries are red in colour while veins are not.what are the factors that give colour to artries and veins?

Retrieved from "http://en.wikipedia.org../../../r/e/f/Wikipedia_talk%7EReference_desk_archive_Science_November_2005_b3e3.html"