"Explains how animals communicate with one another. Describes various cues, such as color changes, body language, songs, calls, and scents, used by animals to tell others when they are ready to mate, if they are dangerous to eat, or if a predator is nearby"--
"Explains how animals breed and care for their young. Describes the incubation of eggs, the construction of nests, and the protection and feeding of young"--
"Explains how and why animals live in social groups. Describes the advantages and disadvantages of group living, such as protection from predators, ease of movement, and quicker spread of disease"--
"Explains how meat-eating animals hunt down and capture prey. Describes carnivores' physical characteristics--such as teeth, claws, and tentacles--and predator behaviors, such as ambushing and pack hunting"--
"Explains how animals depend on one another for survival. Describes mutualism, commensalism, and parasitism, and how they provide animals with food, transportation, and shelter"--
"Explains how animals live near or among human beings. Describes pets, working animals, pests, farm animals, and wild animals that live in cities and towns"--