"Represents the diversity of life, bringing together descriptions of humans, birds, trees, crocodiles, rodents, seaweeds, and whales. General topic articles shed light on the structure and function of organ systems, the heredity and variation of organisms, and the adaptive changes undergone by species in order to survive in their environment, among other topics".

v. 1. Albatross--Crab -- v. 2. Crocodile--Fern -- v. 3. Fruit bat--Grizzly bear -- v. 4. Gulper eel--Human -- v. 5. Hummingbird--Manatee -- v. 6. Mandrill--Otter -- v. 7. Penguin--Reproductive system -- v. 8. Respiratory system--Sequoia -- v. 9. Skeletal system--Trout -- v. 10. Venus flytrap--Zebra -- v. 11. Index.