SORU: boş bırakılan yere parçanın anlam bütünlüğünü sağlamak için getirilebilecek cümleyi bulunuz
Although social and medical interventions have helped people live longer, none of the techniques have affected the aging process. ----. But, there is a change: there are far more 65-year-olds today than there used to be because the past century's efforts reduced early mortality.