SORU: paragrafta boş bırakılan yere uygun düşen cümleyi bulunuz
The calcium stored in the bones and teeth is constantly being exchanged with the calcium in the blood. _______. However, too much calcium can be a problem as well, and can lead to the calcification of joints and produce kidney stones in 1952, one of these stones, weighing nearly seven kilos, was removed from an 80- year-old woman.