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) .
Best Answer: Hi Micha, Secondary groups, unlike primary groups are uni-bonded. That is they depend for social cohesion on as single, or perhaps just a few connections among members. If you're in school, each of your classes is a secondary group. A collection of strangers who are trapped together on an elevator for an hour will form a secondary group. They have being on that elevator in common. A common focus with a largely instrumental orientation..