Noun
biological imperative (plural biological imperatives)
(biology) The needs of living organisms required to perpetuate their existence and survival.
We live in a permanent state of bad faith, a mutual representation of ourselves to one another for the sake of remaining sane and following our biological imperative to continue as a species. Thomas Ligotti
Human beings are not meant to live alone. There is a fundamental biological imperative that propels you and every organism on this planet to be in a community, to be in relationship with other organisms. Bruce H. Lipton