The given line graph illustrates the average carbon dioxide co2 emission per person used in four different countries ( Ireland , Sweden , France and Spain ) over a 50 year period from 1970 to 2010 .
Overall , it is clear from the line graph , that the used of co2 per individual In Sweden and France saw a garduall declined from its beginning to the end of period but Ireland decreased from it mid year 1990 . And Spain increased significantly throughout the year .
According to the graph , Sweden at peaked approximately 14 metric tonnes in 1970 which fall significantly to around 9 metric tonnes in 1990 then it declined slightly till the end of period . Although , France was at 8 metric tonnes in two years 1970 and 1980 but after this it declined gradually throughout the end of period and remained at 6 metric tonnes .
By contrast , Ireland followed a different pattern from it beginning year it at over 8 metric tonnes then it surged quickly at around 11 metric tonnes in 1990 and after that it decreased rapidly to around 8 metric tonnes in 2010 . Spain stood at 4 metric tonnes in 1970 which rose quickly to the end of period and remained under 8 metric tonnes . .