Here's why:

* Hetero means "other" or "different"

* Troph refers to "nourishment" or "food"

So, a heterotroph literally means "other-nourisher". This means they rely on consuming other organisms (plants, animals, or even decaying matter) to obtain their energy and nutrients.

Examples of heterotrophs include:

* Animals

* Fungi

* Bacteria

* Some protists