Biology Definitions Module 10

An association of living organisms and their physical environment.

The study of relationships among organisms in ecosystems.

An organism that eats producers.

An organism that eats primary consumers.

An organism that eats secondary consumers.

A diogram that shows the biomass of organisms at each trophic level.

A measure of the mass of organsims within a region divided by the area of that region .

An ecosystem where all water runoff drains into a single river or stream.

Evaporation of water from the leaves of a plant.

The process by which certain gases (principally water, carbon dioxide, and methane) trap heat that would otherwise escape the earth and radiate into space.