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) .
Co-culture refers to a group of people that are not part of the dominant structure of society, nor do they contribute to this structure. This often includes minorities or ethnic... Co-culture refers to a group of people that are not part of the dominant structure of society, nor do they contribute to this structure. This often includes minorities or ethnic groups. The study of how the co-culture, or subculture, communicates with the dominant societal structure is known as co-culture theory. The theory dictates that people who are part of the co-culture communicate differently with the dominant culture.