Partners for Life: The Mysteries of Animal Symbiosis

Grade 3-6-- Some of the many and varied partnerships between animal species are described in this broad overview of different types of symbiosis. In a flowing style Facklam introduces the subject and defines three main types of symbiosis: mutualism, a partnership which helps both animals; commensalism, a one-sided benefit; and parasitism, in which one benefits at the expense of the other. Insects, sea creatures, birds, and microscopic creatures are included. Parasites such as tapeworms and ticks are described as predators in a non-judgmental way. Although Facklam is at times anthropomorphic and tends to ascribe intent and purpose to the animals, the information is fascinating. The line drawings amplify the text, although occasionally they vary from it. (The plant in the drawing that illustrates the large blue butterfly on a thyme plant looks more like rosemary.) In the final chapter, the explanation of Darwin's theory of survival of the fittest is excellent. The useful index will help with report preparation. --Frances E. Millhouser, Reston Regional Library, VA
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