Ecology is the study of organisms and their relationship between the living and nonliving portions of their ... Producers Producers- are all autotrophs in an environment Pyramid diagrams can also be used to represent other components of an ecosys-tem. What is the mass of the phytoplankton in Pyramid Y of MoMel 3? 40 g/m 1,,--21. May 20, 2015 · A relationship in which one animal hunts, kills and eats another animal Predation An organism that eats producers Primary Comsumer An organism in a food web or food chain that makes its own food Producer A close relationship between two species that benefits at least one of the species (3 types-mutualism, commensalism, parasitism) Symbiosis Heterotrophs and Autotrophs Organisms that make their own food are called autotrophs. These organisms are also called ‘producers’ because they are producing food. Plants, algae, and some bacteria are able to use light energy from the sun to produce food. The process by which autotrophs use the energy of