GENERAL KNOWLEDGE

Detailed explanation-1: -Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs. Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms.

Detailed explanation-2: -Carnivores eat other consumers. This means they eat other animals. Animals that eat both producers and consumers are called omnivores.

Detailed explanation-3: -Consumers constitute the upper trophic levels. Unlike producers, they cannot make their own food. To get energy, they eat plants or other animals, while some eat both.

Detailed explanation-4: -Autotrophs in the Food Chain Because autotrophs do not consume other organisms, they are the first trophic level.