The line graph illustrates the critical level regarding four main environmental issues of people coming from China, India, Germany and USA between 2000 and 2010.
Overall, people’ consideration about the seriousness of the environmental problems including shortages of fresh water, air pollution, automobile emissions, and climate change exprienced significant fluctuation throughout the 10-year period. Noticeably, concern of fresh water shortages has only raised since 2003, indicating that citizens of mentioned countries might not aware of this problem.
In terms of three categories commencing in 2000, they witnessed the same tendancy of downward trend before taking a turn in around 2003. Highest level of concern was allocated for air pollution at around 65% average, then 60% attention was accounted for automobile emissions, and the figure for climate change stood at roughly 50%. In 2006, air pollution seriousness reached a peak at 70%, remaining the highest position of these categories, whereas the other two problems’ continued increasing and reaching at around 60%. Since then, the figures for these three environmental issues slightly varied until stopped at over 60%, 50% and 55% respectively in mentioned order.
Regarding the fresh water shortages, there was virtually nobody aware of it until 2003. However, once started, it became the most serious problems that people concern about. After suffering a dramatic decline in 2-year period from 2003 to 2005, the seriousness of this category escalated significantly, surpassed the figure for air pollution in 2006 and became the biggest issue that citizens of four countries paid attention to.