OBJECTIVE FORESTRY

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: -Consumers are also called heterotrophs.

Detailed explanation-3: -Some heterotrophs are primary consumers and are also known as herbivores. They eat the autotrophic plants and/or other organisms capable of manufacturing their own food, such as phytoplankton and photosynthetic bacteria.