Describes Queen Alexandra's birdwing butterflies, discussing where and how they live and their size, important body parts, diet, and stages of development.
Describes what the fossilized remains of mammals that lived before, during, and after the Age of Dinosaurs have revealed about their physical characteristics and way of life.
Describes Queen Alexandra's birdwing butterflies, discussing where and how they live and their size, important body parts, diet, and stages of development.
Explores the practice of hibernation as a means for winter survival, discussing the habits of a variety of animals such as hummingbirds, bats, chipmunks, and rattlesnakes.
Describes a year in the life of a young African elephant as she migrates with her herd from the open grasslands to the hill country where she mates and also helps her sister raise a newborn baby.
An encyclopedia of science and technology, covering such areas as the Earth, the ocean, plants and animals, medicine, agriculture, manufacturing, and transportation.
See how natural forces can raise mountains, build islands and change the weather. Find out how volcanoes have helped to produce huge varieties of plants and animals in the world.
Describes a year in the life of a male sperm whale who lives most of the time in cold Arctic waters, except for the time he goes south to tropical waters to mate.
Surveys the evolutionary ancestors of modern humans and describes the ways in which we evolved by examining fossils of prehistoric apes, pre-humans, and early humans.
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