The two pie charts illustrate, the proportion of six different energy sources in a country in 1985 and 2003. Units are measured in percentage.
Overall, oil is the main energy source in both the years though, there is a significant improvement in natural gas energy.
In 1985, more than half of the energy was generated from oil with 52% and the least amount of energy from hydrogen and other renewable approximately 4%and 1% respectively. Likewise, natural gas energy accounts for about 13% and coal with 8%. Nuclear energy stands at second place with 22% this year.
On the other hand, after 18 years a dramatic decline in oil energy sources with only 39%. Natural gas and coal energy enhance production from 13% to 23% and 8% to 13% respectively in 2003. Other renewable sources also has a 3% improvement in 2003 when compared to the previous year. However, hydrogen energy remains the same at 4% in both years.
- Some experts believe that it is better for children to begin learning a foreign language in primary school rather than secondary school. D o the advantages of this outweigh disadvantages. 67
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- Some people say that economic growth is the only way to end hunger and poverty while others say that economic growth is damaging the environment so it must be stopped Discuss both views and give your opinion 84
- The diagrams below show the present building of a college and the plan for changes to the college site in the future 74