What is the defining characteristic of omnivores?

The defining characteristic of omnivores is that they have a varied diet that includes both plants and animals. This dietary flexibility allows omnivores to adapt to a wide range of environments and food availability. By consuming both types of food sources, omnivores can obtain a broad spectrum of nutrients necessary for their survival.

In contrast, some animals specialize exclusively in one type of food; for example, herbivores focus only on plant material, deriving their energy and nutrients from vegetation. Carnivores, on the other hand, exclusively consume other animals for their sustenance. The option suggesting that omnivores do not consume any food is inaccurate, as all organisms require nutrients for energy, growth, and maintenance. This dietary adaptability makes omnivores significant players in ecosystems, as they can help control populations of both plant and animal species and contribute to nutrient cycling.