if a living thing requires something then that something has a positive impact on that living thing
organism_part is living_thing. living_organism is living_thing. living_thing is not tangible_thing. humans is living_things. life is living_thing. aerobic_thing is living_thing. recovered_thing is not living_thing. living_thing is tangible_thing. recovered_thing is living_thing. aerobic_thing is not living_thing.