Introduces the main kinds of insects, and explains how they are born, grow, move, eat, protect themselves, and reproduce, where they live, and their effects on human life.
Introduces the main kinds of fish--jawless and jawed, and those with cartilage or bony skeletons--and explains how they are born, where they live, their enemies, and how they eat, protect themselves,
Introduces the main kinds of mammals, and explains how they are born, grow, move, protect themselves, and reproduce, where they live, and how other mammals interact with humans.
