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.
Other primate characteristics include having a nail on the first digit although, in many cases, each digit has a nail instead of a claw. Primates also possess a clavicle, or collarbone. All primates exhibit the tendency to be erect; this trait is visible when even quadrapedal primates sit or stand.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.
Social structure-primates are social-especially humans. The social nature of primates is one of their primary adaptations to the environment, providing many benefits and many challenges. 1  Polyamy -- one-male, multi-female (common, occurs in gorillas, guenons, pottos, some spider monkeys, patas).et, clearly there are differences in behavior among different species of primates-especially humans. Similar behaviors may also have different causes. What may be instinctual in one species may be learned in another. And yet the similarities may give us some knowledge of the roots of some human behaviors.