The Tree of Life is a Celtic symbol. It is a tree that forms a circle, roots flowing into branches, branches flowing into roots. The symbolism behind it shows how life flows into death, as death flows into life.
The Africans believed in Omumboromgonga which was a lead tree. while the Norse believed in Yggdrasill which was an ash tree. Those are the only ones I can think of.
The concept of a tree of life as a many-branched tree illustrating the idea that all life on earth is related has been used in science, religion, philosophy, mythology, and other areas. A tree of...