Gr 2-4-These titles are rich in illustrations, ranging from photographs to maps and drawings. The design is attractive and the clearly presented information does not bombard readers with too many details. In each volume, carefully organized chapters explore the wildlife, plant life, and/or people who inhabit the featured environments. Two chapters in each volume explore the issues of pollution and conservation. The final chapter offers a fictional story based on an aboriginal myth accompanied by fanciful artwork. Boxed inserts offer ""Did you know?"" facts. Useful introductions to the study of ecology.