木 Arboreal Snapshot of Northern Part of Korea, Odaesann Mtn JinBoo Korea 2006

樹 Once upon a time on Earth- Pine Trees only.., Odaesan Mountain JinBoo Korea 2006

Before the advent of needle-shaped trees, families of reptiles might have dominated the world with cold-blooded biosystems. As the climate got colder, mammals, our ancester, were getting more competitive in natural selection with the hairy skins for warmth against colder environments..