An organism that eats both autotrophs and heterotrophs, such as a bear or human.

• A. Omnivore
• B. Herbivore
• C. Detritovore
• D. Decomposer

Answer: (A)

The main idea here is how we classify an organism’s diet based on what it eats. An organism that consumes both autotrophs (plants and algae) and heterotrophs (other animals) is an omnivore. Bears and humans illustrate this well: they eat a mix of plant foods like fruits, vegetables, and nuts, plus animal foods such as meat, fish, or insects. This dual consumption gives omnivores flexibility when one food source is scarce.

In contrast, herbivores eat only plants, detritivores feed on dead organic matter, and decomposers break down organic material outside their bodies and absorb the released nutrients. Those categories do not involve regularly eating both living plant material and animal tissue the way omnivores do.