336 pages, 1 plate : color illustrations, color maps ; 29 cm
text txt rdacontent
unmediated n rdamedia
volume nc rdacarrier
Note
At head of title: Reader's digest.
Includes index.
Summary
Answers questions about the physical world, its plants and animals, and the adaptations and interactions of plants and animals in various environments such as deserts, mountains, and seashores.
