(ecology) a group of interdependent organisms inhabiting the same region and interacting with each other
part of Earth in which life exists including land, water, and air or atmosphere
the branch of biology concerned with the relations between organisms and their environment
any animal that lives by preying on other animals
relationship in which two species live closely together
process by which two species evolve in response to changes in each other
an organism that eats both plants and animals.
an organism that eats only plants.
organisms that make their own food
animal hunted or caught for food
A relationship between two or more organisms of different species where all benefit from the asociation.
a system formed by the interaction of a community of organisms with their physical environment
an organism that makes its own food
an organism that obtains energy by feeding on other organisms
organism that breaks down and obtains energy from dead organic matter
the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it
symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed
a series of steps in which organisms transfer energy by eating and being eaten
a diagram that shows the feeding relationships between organisms in an ecosystem