Part of the earth’s surface that includes land, water, and atmosphere where living organisms exist

All of the interacting species within a particular ecosystem

Heterotrophic organisms that must consume other organisms for survival

Living organisms that break down organic matter, making it available to primary producers

An organism that feeds on dead or decaying plant or animal remains

All of the biotic and abiotic factors within a particular environment

A living thing that portrays the basic characteristics of life

All of the organisms of one species within a particular ecosystem

Autotrophic organisms that undergo photosynthesis