Alvin Silverstein
2) Symbiosis
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Description
Discusses the three kinds of symbiosis--mutualism, commensalism, and parasitism--and describes examples of these relationships.
13) The grizzly bear
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Describes the physical characteristics and behavior of the grizzly bear, its decline in numbers due to human population growth and activities, and the efforts being made to maintain its population.
14) Leukemia
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Gives a history of the study of leukemia; presents information about its symptoms, causes, diagnosis, treatment, prevention, and social and economic impact; and describes current research and future prospects.
15) Cells
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A detailed presentation of the structure and function of different types of cells and of research into developing technologies such as cloning and the use of stem cells.
16) Pocket pets
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Discusses the pros and cons of keeping various small pets such as chinchillas, hamsters, gerbils, and mice and examines their care, feeding, and emotional needs.
18) Staying safe
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Describes potential dangers at home, at play, on streets and roads, at school, and when interacting with other people and explains what to do in an emergency.