What must happen in order for specialization of labor to occur ?

Sam and ben have discovered some strange animals living in the woods behind their house. ben is excited because he believes they are marsupials, an animal he's never observed in the wild before. his brother is sure it is not. what feature should the boys consider in deciding whether the animals are marsupials?

President franklin roosevelt most likely supported lawrence camp in the senate race against walter george and eugenes homage in 1938 because he

Erikson's theory of personality grants more power to the than freud had allowed.