Final answer:
Omnivores are animals that consume a variety of plant and animal foods, exemplified by humans, bears, and chickens. Their diverse diet is supported by a dental structure that includes incisors for slicing, canines for tearing, and premolars and molars for grinding.
Step-by-step explanation:
Omnivores are animals that eat both plant- and animal-derived food. Some common examples of omnivores include humans, bears, and chickens. These animals have diverse diets that can consist of fruits, vegetables, grains, meat, and fish. Omnivores have a unique dental arcade that reflects their varied diet. They possess four types of teeth: incisors, canines, premolars, and molars. Incisors are used for cutting and slicing, canines for tearing, and premolars and molars for crushing and grinding. This combination allows them to process a wide range of foods. Omnivores' teeth are less specialized than those of strict herbivores or carnivores, which are more suited to grinding plant matter or ripping meat, respectively.