a group of organisms of the same species who live in the same area at the same time.
an organism that synthesizes its organic molecules from simple inorganic substances
an organism that lives on or in non-living organic matter, secreting digestive enzymes and absorbing digested products
a group of interdependent organisms inhabiting the same region and interacting with each.
a group of organisms that can interbreed and produce fertile offspring.
an organism that ingests other organic matter that is living or recently killed
the feeding level in a food web defined by the number of energy transfers away from the original source of energy.
an organism that ingests nonliving organic matter
the study of relationships between living organisms & between organisms and environment.
a community of organisms and their abiotic environment.
A series of steps in which organisms transfer energy by eating and being eaten
A complex arrangement of interrelated food chains illustrating the flow of energy between interdependent organisms.
the type of environment in which an organism or group normally lives.
an organism that obtains organic molecules from other organisms
