Unit 1 Vocabulary

A relationship in which two different organisms live in close association with each other

• symbiosis

• competition

• sustainability

• homeostasis

A relationship between two organisms in which one organism benefits and the other is unaffected

• mutualism

• parasitism

• commensalism

• competition

A relationship between two species in which both species benefit

• commensalism

• mutualism

• parasitism

• predation

Largest number of individuals of a population that a environment can support

• limiting factor

• carrying capacity

• biological magnification

• homeostasis

Any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms

• limiting factor

• carrying capacity

• biological magnification

• homeostasis

increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web

• sustainability

• niche

• homeostasis

• biomagnification

The ability to keep in existence or maintain

• sustainability

• conservation

• biomagnification

• niche

Anything that is living, has ever been living or is derived from something living

• abiotic

• niche

• biotic

• autotroph

the non-living parts of an environment

• abiotic

• exo

• biotic

• endo

An organism that makes its own food; producer

• exo

• biotic

• heterotroph

• autotroph