SORU: boş bırakılan yere parçanın anlam bütünlüğünü sağlamak için getirilebilecek cümleyi bulunuz
Most trees produce a ring of new wood each year and these circles of growrth can easily be seen in a crosssection of the trunk of a felled tree.----. First, the rings become narrower with the increasing age of the tree. Second, the amount a tree grows each year is affected by fluctuations in climate.