(3) 4-6 Illustrated by Beverly J. Doyle. Batten clearly explains how alien species have been introduced through history, then gives worldwide examples of such species in their new habitats and of the native species that they threaten to displace. Detailed art spanning two pages supports the text; the pictured animals and plants, from Australia's native bilby to alien kudzu in the United States, are identified at the bottom of the page. Glos.

Reviewer: Frieda F. Bostian