SCIENCE
Katz, Sharon

The Great Lakes

(3) 4-6 Ecosystems of North America series. These books explore an ecosystem by examining its various subsystems (e.g., tallgrass, mixed-grass, and shortgrass prairies). The accessible texts illustrate how living and nonliving components interact and affect one another; how plants and animals have adapted to their surroundings; and how people have damaged and now attempt to sustain those ecosystems. Plenty of clear color photos illustrate the books. Bib., glos., ind.

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