The provided bar chart depicts how many tons of greenhouse gas emissions from three distinct fossil fuels sources namely gas,oil and, coal over a span of two decades,from 1990 to 2010.
Looking from an overall perspective,there was an upward trend for the tone of gas emission.while, the reverse trend can be observed for the coal emission.Beside, oil gas exhibited a fluctuation throughout the time period.
Taking a closer look at the chart reveal that gas missions gradually increased from around 220 million ton at the initial of the period to approximately 320 million of the total by 2010.Additionaly, the figure for gas emissions remained the leading position from 1995 to 2010.In contrast , a decreasing trend was seen in the figure of coal emission despite having the highest number of million tons in 1990,commencing with roughly 300 million tons to standing at below 150 by the end of the period.
In more depth, oil emissions stood at about 270 million tons in 1990,which gradually drop to 240 million tons over a five years.Before it continued to fall to under 200 million tons at the conclusion of the given timeframe.