Natural Selection

In Berkeley’s bright tale, here’s what you see: Life changes through time—yes, you and me. From one old ancestor, long, long ago, Came whales and hummingbirds, oak trees that grow. “Descent with modification” is the name, Same family tree, though we don’t look the same. Small changes can build up, little by little, From feather to fin, from tough to more brittle. So evolution means cousins galore: A grand “tree of life” with branches and more.