populations are made of one characteristics of releases linked together
human_body has several_mechanisms_to_regulate_internal_temperature states has populations uncommunicativeness is trait. mate_selection is not expriencial_and_genetic. mate_selection is expriencial_and_genetic. human_body has not several_mechanisms_to_regulate_internal_temperature population is group_of_similar_living_things. population is set_of_organisms. countries has populations making_reservoirs is making.