Discusses the organs and function of the human circulatory system, the vital functions of blood, and the medical diagnosis and treatment of heart disease and other circulatory disorders.
Provides information about stimulants, looking at the history of the drugs, and discussing stimulant abuse, the dangers of stimulant addiction, treatment for stimulant addiction, and attempts to eliminate illegal stimulant use.
Explains what narcotics are, how they are used, their natural or intended effects, what happens when they are abused, prevention efforts, and the latest treatment for narcotic addiction.
Discusses the organs and function of the human digestive system, nutrients essential for good health and how they are processed by the body, and medical treatments of digestive disorders.
Presents twenty experiments that investigate questions about ecosystems, and the effects of living, nonliving, and human factors on ecosystems. Includes suggestions on how to adapt the experiments for science fair projects.
Photographs and simple text describe a subway ride, including walking down into the station, going through the turnstile, waiting for the train, riding inside the crowded car, and waving to the conductor after exiting.
