Takes a closer look at the teeth's role in the digestive system. Explains the different types of teeth and how our teeth help us perform everyday actions from talking to chewing.
An introduction to the world of plants and their place in the food chain ranges from single-celled diatoms to giant redwoods and covers plant evolution, growth, reproduction, structure, and life cycles
Describes and discusses fish, their diversity, biology, habits, and reproductive and adaptive behavior, emphasizing that there are over two hundred thousand species of fish
Discusses the habits and characteristics of ants including a few of the 10,000 ant species such as army ants, parasol ants, blood-red ants, and Amazon ants.
Describes the geography of the world's tropical forests and the variety of plant and animal life within them and notes current threats to the forests' existence
Describes the characteristics and behavior of various kinds of bears found around the world, looks at the life cycle of bears, and discusses the conservation of bears and pandas
Describes the life cycles of butterflies and moths, explains their similarities and differences, and contrasts the butterfly's daytime life to the moth's nighttime activity
Explains how whales and dolphins differ from fish, describes a variety of species, looks at how they swim, breathe, migrate, and raise their young, and stresses the importance of conservation