TERM: Description of glossary term.

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Kontext: Ecology

obligatory

The animal has no option. Contrast with facultative

Literatur

Barlow, George W.. 2002. "The Cichlid Fishes (Nature's Grand Experiment in Evolution)". Perseus Publishing. pp. 352 pp. ISBN: 9780738203768 (crc03927) (Kurzfassung)