Dentition mammals the infants have a set of teeth that fall out and are replaced by adult teeth. These are called deciduous teeth, primary teeth, baby teeth or milk teeth. Animals that have two sets of teeth, one followed by the other, are said to be diphyodont. Normally the dental formula for milk teeth is the same as for adult teeth except that the molars are missing. Because mammal teeth are specialised for different functions, many mammal groups have lost teeth not needed in their adaptation. Tooth form has also undergone evolutionary modification as a result of natural selection for specialised
Atlantic semi-deciduous forests Atlantic semi-deciduous forests The Atlantic semi-deciduous forests, also known as the Atlantic interior forests, are a belt of tropical moist broadleaf forests that are part of the Atlantic Forests complex of eastern Brazil. The semi-deciduous forests form a transitional zone between the humid Atlantic moist forests which lie near the Atlantic coast, and the drier Caatinga shrublands, Atlantic dry forests, and Cerrado savannas of the interior. The World Wildlife Fund divides the semi-deciduous forests into three distinct ecoregions. The Pernambuco interior forests lie west of the Pernambuco coastal forests in Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, and Sergipe states.