SCIENCE
Hirschi, Ron

Salmon

(3) 4-6 Carolrhoda Nature Watch series. Clearly written text and well-labeled color photos portray the physiology, behavior, and life cycle of five types of Pacific salmon found in North America. Hirschi discusses migration, predators, and threats to natural habitats due to development, logging, pollution, and dams, as well as drawbacks to programs such as fish ladders and breeding and releasing hatchery salmon. Glos., ind.

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