The Green Beret is a special operations group in US army though it is also the name of special cap and badge worn by these soldiers. It can be worn only by those soldiers who have qualified as Special Forces soldiers.
Brain. The brains of primates often is one of the most distinguishable characteristics from other types of mammals or animals. The olfactory region in primates has been reduced greatly in most species, such as humans, and the cerebrum expanded to accept the order's increasing reliance on sight and social behaviors.rimates are an extremely diverse group of between 190 and 350 living species, depending on different taxonomic structures, and exhibit a wide range of characteristic features that help distinguish them from other mammals.
Most also have opposable thumbs and some have prehensile tails. Many species are sexually dimorphic; differences include body mass, canine tooth size, and coloration. Primates have slower rates of development than other similarly sized mammals and reach maturity later, but have longer lifespans.