Tells how elephants bathe, find food, raise their young, and are trained to work, describes elephant behavior, and explains why they may become an endangered species.
Examines how helicopters are used in modern warfare to carry troops and supplies, serve as reconnaissance and fighter craft, hunt and destroy submarines, and attack enemy ships.
Examines guinea pigs around the world, describing their appearance, habitats, feeding and reproductive habits, and life cycles, and providing tips for their proper care
Brief text explains how cranes lift and move heavy objects and how they are used in such places as construction sites, docks, factories, warehouses, and railroads.
Introduces, in brief text and illustrations, the characteristics and functions of various types of machines used for excavation and moving material such as soil, rock, or dirt.