Tree of Life The Incredible Biodiversity of Life on Earth

If every known species on Earth were a leaf on a tree, the treewould have 1,750,000 leaves. Humans would count for just one leaf onthis Tree of Life. Tree of Life is a dazzling introduction to biodiversity -the incredible variety of life on Earth. It shows how living things areclassified, or organized, into five branches and how all of life onEarth is interconnected, a problem with just one branch, one twig orone leaf on the Tree of Life may affect the whole tree with devastatingresults.