The change in Helen's work hours (night shift) may cause Helen to be at increased risk for heart disease. The effects of shift work can manifest in various forms of illness, one is problems in the cardiovascular system. The reason is because the cardiovascular system in all mammals is highly organised with regard to time and when the time is different organized (the time we should sleep we work) that can lead to certain conditions.
Answer:The official poverty rate in 2017 was 12.3 percent, down 0.4 percentage points from 12.7 percent in 2016. This is the third consecutive annual decline in poverty.