8. (1) The wide disparity between rich and poor can be attributed to a number of changes in U.S. society. (2) First, there has been a shift in the economy away from manufacturing jobs that paid high wages to low-skilled workers. (3) Second, many industries have increased their reliance on the use of computer and computer-assisted technology, which requires higher skills and education and offers proportionately high salaries. (4) Third, unionized and well-paid workers have become scarcer, while part-time and underpaid workers have become more prevalent. (5) And fourth, there has been a significant increase in the number of two-career families in which both husbands and wives are well educated and highly paid. The selection's main pattern of organization is: (Type LIST or TIME. Then click "GO.")