The given graph shows the main sources of energy for USA in 1980 and 1990. Write a report for a university lecturer making comparisons where relevant and reporting the main features.
The pie chart illustrates the main sources of energy for the U.S.A. in 1980 and 1990. Overall, it is clear that there was an increase in the proportion of energy from coal and nuclear power, while the opposite was true for oil. It is also worth mentioning that the figures for natural gas and hydroelectric power remained more or less unchanged. Moreover, oil witnessed the largest change in energy production over the given period.
In 1980, the percentage of energy from coal was 22%, while in 1990 it rose to 27%. The percentage of energy from nuclear power was 5% in 1980; however, in 1990 it dramatically increased to 10%. It is also notable that, from 1980 to 1990, the figure for energy from hydroelectric power was 5% and stable.
The percentage of energy from natural gas saw a decrease of varying degrees between 1980 and 1990, from 26% to 25%. It is also clear that, in 1980, the proportion of energy from oil was 42%, but in 1990 it negligibly decreased to 33%.
The essay is logically organized and presents information in a clear manner. Comparisons are effectively made, and the main features are highlighted.
Suggestions
- Use more linking words to enhance flow.
- Ensure each paragraph focuses on a specific aspect.
- Summarize main points at the end.
The essay uses a range of vocabulary accurately. Some phrases and words could be more varied.
The essay demonstrates a good command of grammar with minor errors. Sentence structures are varied and mostly accurate.
The essay effectively addresses the task and provides a comprehensive overview of the data. Key features are identified and compared accurately.
Suggestions
- Ensure all data points are accurately represented.
- Include a brief conclusion to summarize findings.