Heterotrophs are organisms that consume other organisms in order to gain energy. Compare two different categories of heterotrophs in terms of how they obtain energy. Explain your answer in one to two sentences

Both primary (herbivores) and secondary (carnivores and omnivores) consumers are heterotrophs, while primary producers are autotrophs. A third type of heterotrophic consumer is a detritivore. These organisms obtain food by feeding on the remains of plants and animals as well as fecal matter.

answer; i believe the answer is hydraulic action;