life (biology)

Discusses what living things need as well as which things are nonliving in nature.

Explains what living things are, looks at animal bodies, and discusses the characteristics of insects, reptiles, fish, birds, mammals, plants, and other living things.

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival, and features photos, illustrations, and sidebars. This volume covers "Sea urchin and sand dollar"-"Sponge.".

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival, and features photos, illustrations, and sidebars. This volume covers "Seabird"-"Sea turtle.".

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival; includes an article on related topics such as rivers and streams; and features photos, illustrations, and sidebars. This volume covers Pla-Sea.

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival; includes articles on related topics such as oceanography; and features photos, illustrations, and sidebars. This volume covers New-Pir.

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival; includes an article on lakes and ponds; and features photos, illustrations, and sidebars. This volume covers Fro-Mud.

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival; includes an article on aquatic flowering plants; and features photos, illustrations, and sidebars. This volume covers Dee-Fly.

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival; includes articles on related topics such as aquatic commerce and industry; and features photos, illustrations, and sidebars. This volume covers Cat-Cra.

Contains alphabetized profiles of aquatic animals, covering their anatomy, classification, habitats, food and feeding, behavior, locomotion, reproduction, and survival; includes an article on beaches and coasts; and features photos, illustrations, and sidebars. This volume covers Barr-Car.