Velma is developing a computer model of translation. Her instructor points out that the model does not include ribosomes or ribosomal rna. If the model is accurate in other ways, how does the absence of ribosomes and ribosomal rna affect it?.

The correct answer is b, social stratification is needed for a society to exist. marxist theory regarding social stratification is that due to the differing economic capacities among people in society, a natural separation occurs between those that own the means of production and those that sell their labour in the production chain. 

Mabey a person hope this hels

Maybe because he failed the classes or is very accelerated.