Vulcan blood is presumed to be green in color , the explanation for this ( first definitely advanced in the installment  Obsession ,  from the original program ) being that the oxiferous ( oxygen-carrying ) protein hemoglobin , in Vulcan blood cells , is chemically based on the element copper , rather than the element iron as is the case with ...
SECONDARY GROUPS The term secondary group has come into use in sociology to describe any group which lacks one or more of the elements that go together to characterize a primary group. In general, a secondary group is composed of individuals who lacks strong emotional ties one another.. (end of quotation) .
An ethnic group is a social category of people who share a common culture, such as a common language, a common religion, or common norms, customs, practices, and history. Ethnic groups have a consciousness of their common cultural bond.ssimilation is a process in which a minority becomes absorbed into the dominant society â socially, economically, and culturally. Symbolic interaction theorists look at two issues in relation to race and ethnicity. First, they look at the role of social interaction and how it reduces racial and ethnic hostility.