organisms capable of reproducing fertile offspring, using sexual reproduction.

natural home or environment of an animal, plant, or other organism

particular section, group, or type of people or animals living in an area or country

group of populations living & interacting with each other in an area

community of living organisms called producers, consumers, & decomposers

study deals with the relations of organisms to one another & to their physical surroundings

produces complex organic compounds from simple substances in its surroundings

organism deriving its nutritional requirements from complex organic substances

organisms of an ecological food chain that receive energy by consuming others

organisms that produce complex compounds through photosynthesis or chemosynthesis

eat dead leaves, faeces, and carcasses

live on or in non-organic matter, role to help decay

position that an organism occupies in a food chain

succession of organisms in a community linked through the transfer of energy & nutrients

natural interconnection of food chains & a graphical representation of what eats what

square or rectangular plot of land marked off for the study of plants and animals

statistical method that checks goodness of fit between observed values & expected ones

outdoor experimental system that examines the natural environment under controlled conditions