Classification attempts to impose a hierarchy on the complex and dynamic variety of life on Earth by describing how different species group together and how they are related to one another or not.

Original classification of living organisms containing four kingdoms (Monera, Protista, Vegetabilia and Animalia), 60 phyla and 253 classes, is presented.

A reshuffling of the animal kingdom may be necessary in light of new genetic findings-- not to lions, tigers or bears, but worms, a recent study suggests. A team of international scientists including ...

Save guides, add subjects and pick up where you left off with your BBC account. Classification attempts to impose a hierarchy on the complex and dynamic variety of life on Earth by describing how ...