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) .
In the social sciences, the term minority is used to refer to categories of persons who hold fewer positions of social power. The term minority group often occurs alongside a discourse of civil rights and collective rights which gained prominence in the 20th century.Members of minority groups are prone to different treatment in the countries and societies in which they live.n any case, minority group status is categorical in nature: an individual who exhibits the physical or behavioral characteristics of a given minority group will be accorded the status of that group and be subject to the same treatment as other members of that group.