. . "ore a heterotroph that obtains energy by eating both plants and animals ??? ??? ??? detritivore a heterotroph that obtains energy by feeding on plant and animal remains and other dead matter ??? ??? ??? decomposer breaks down organic matter ??? ??? ??? food chain a series of steps in which an organisms transfer energy by eating and being eaten ??? ??? ??? food web feeding relationships among vario" . . .