This detailed guide to natural food chains is an ideal complement to the National Curriculum. It studies how energy is passed along the food chain and from plants to animals before examining how human activity can interfere with the natural process. Packed with detailed photographs and diagrams it provides both clear and fascinating coverage of the subject. Numerous activities encourage readers to explore aspects of food chains for themselves. And a topic web and cross-curricular activity ideas provide teachers with additional resources. A re-issue of one of a popular series.