SORU: boş bırakılan yere parçanın anlam bütünlüğünü sağlamak için getirilebilecek cümleyi bulunuz
Mothers around the world are getting older. In the UK, the mean age for having a first child is 27.3, compared with 23.7 in 19Mean age at first birth in the US has also increased, rising from 21.4 in 1970 to 24.9 in 2000. ----. Studies by the US National Heart, Lung and Blood Institute found that the risk of a child being obese increases by about 14% for every five extra years of the mother's age.