Identifying which category a tree ... simple or compound, will have a bud node at the place of petiole attachment to the twig. Compound leaves have a bud node at the base of each stem or petiole ...

The Tree of Life is flourishing. The Web-based project, a massive collaboration among scientists from all over the world, is growing more "leaves" and ... There's no one book that has this ...

In 1837, Charles Darwin sketched a simple ... life that we’re most familiar with, especially those we can see and study. It’s no coincidence that animals made up half of the “comprehensive ...

The Tree of Life is flourishing. The Web-based project, a massive collaboration among scientists from all over the world, is growing more “leaves ... There’s no one book that has this ...