pathogens
One celled organisms are called unicellular organisms.
Organisms that eat other organisms are called consumers or predators.
The process by which modern organisms have descended from ancient organisms is called evolution.
These organisms would be called mutants.
Self-nourishing organisms are called
The process by which modern organisms have descended from ancient organisms is called evolution.
Organisms that eat plants are called herbivores.
Organisms called decomposers or detritivores.
Those organisms are called heterotrophic. These organisms either eat the autotrophs (organisms that make their own food) or eat the organisms that eat the autotrophs (also called the producers). Heterotrophs are also called "consumers."
Parasites.
Biodiversity
These are called decomposers