Key Definitions

 Relations of organisms to one another and to their physical surroundings.

Geographical area occupied by an ecosystem

All the members of one species in a habitat/particular habitat

All organisms in a particular habitat

An ecological community together with its environment, functioning as a unit in a given area

All the factors in a habitat which affect an organism (conditions of the habitat)

Living organisms

Non-living chemical and physical factors in the environment

The way an organism fits in to the environment/ the job of the organism

Energy level in a food chain

A grup of individuals capable of breeding and which produce fertile offspring

Organism that produces its own energy

Consumes another organism to get energy

An animal that feeds on plants

An animal that eats meat

An organism that feeds on both plants and animals

An organism that decomposes organic material

Capable of self-nourishment by producing its own energy form inorganic materials

An organism that cannot synthesis its own food or energy so consumes other organisms

An organism that feeds on or derives nourishment from decaying organic matter