a lack of something that a living thing requires prevents the survival of that living thing
biologically_viable_thing is living_thing. immune_thing is living_thing. life is not living_thing. living_thing is not tangible_thing. life is living_thing. living_thing is living_or_fictional_thing. living_thing is tangible_thing. living_thing is not living_or_fictional_thing. survival is not life. living_thing is not finite_spatial_thing.