HUMAN NUTRITION

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: -The next trophic levels are made up of animals that eat producers. These organisms are called consumers. Consumers can be carnivores (animals that eat other animals) or omnivores (animals that eat both plants and animals).

Detailed explanation-3: -Animals and most of other organisms cannot prepare their own food. They consume food prepared by the plants. So, they are called heterotrophs (heteros = other, trophism = nutrition).