Analyst Insight: The retail industry will face many difficult challenges in 2010. Unemployment and underemployment are high and living standards for Americans continue to erode, leaving little money for purchases outside of necessities. Also, issues in housing, banking and health care will continue. Although there may not be much sales growth in 2010, retailers can still strengthen their bottom lines by having an effective retail supply chain, which is essential to reduce costs and maintain high service levels.