In heterotrophs, heterotrophy can't synthesize organic matter from inorganic matter by itself, but can only maintain metabolism by ingesting organic matter. The fundamental difference between autotrophs and heterotrophs lies in whether inorganic substances can synthesize organic heterotrophs by themselves. Most microorganisms, most animals and other heterotrophs can act as decomposers and consumers in the ecosystem.

Heterotrophs is divided into saprophytic type, parasitic type and phagocytic type.

People are devouring. Hehe, you missed it.