The given bar chart illustrates the percentage of energy usage in 2007 in two places: North America, and South America.
Overall, the sources according to the chart are nuclear, oil, coal, hydroelectric, and natural gas. Additionally, it is clear from the chart that both North America and South America relied on oil energy the most compared to other energy sources in 2007.
On the one hand, those continents used oil for energy, as mentioned before, with a percentages of 45 for North American and 41 for South America respectively. Furthermore, they consumed natural gas less than oil with percentages of 25 for North America and 21 for South America.
On the other hand, the least used energy sources were coal, hydroelectric, a necluer. The chart depicts that North America usage of hydroelectric, and South America consuming of coal, were only 5 percent. However, North America used coal as 20 percent compared to other sources, while South America used hydroelectric as 28 percent. Finally, the least used energy source was nuclear, with only 9 percent for North American and 1 percent for South America.