if a population decreases to zero then that organism is extinct
decrease is change_of_magnitude. zero is integer. osteogenesis_imperfecta is autosomal_dominant_disease. zero is lower_number_than_one. jupiter has population_of_zero zero is digit. osteogenesis_imperfecta is disease. negative_number is non_zero_number. zero is number. osteogenesis_imperfecta is illness.