Describes the structure and function of the human circulatory system.
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This book describes the physical characteristics, behavior, life cycle, and habitats of piranhas.
Describes the physical characteristics, behavior, enemies, and habitats of the biggest and hairiest spiders.
Discusses the reaction of the human body to viruses, the AIDS virus (HIV), and its effect on the human immune system.
Provides you with a glimpse of the world as it is known to the speedy roadrunner. The life and habits of the roadrunner are accurately depicted in this book through a witty rhyme and fantastically vibrant illustrations.