The two graphs compares that oil was the major energy source in the USA in both 1980 and 1990 and that the number of coal, natural gas and hydroelectric power remained stable in much the same proportions.
The two graphs compare that oil was the major energy source in the USA in both 1980 and 1990 and that the number of coal, natural gas and hydroelectric power remained stable in much the same proportions. On the other hand, there was a dramatic rise in nuclear power, which doubled its percentage over the ten years.
Oil supplied the largest percentage of energy, although the percentage decreased gradually from 42% in 1980 to 33% in 1990.
Coal in 1990 was the second largest source of energy, increasing its proportion to 27% from 22% in the previous decade.
Natural gas, the second largest source in 1980 at 26%, decreased slightly to provide 25% of America’s energy ten years later.
There was no change in the percentage supplied by hydroelectric power which remained constant one in twenty of the total energy used.
In contrast, Nuclear power witnessed a dramatic jump: in 1990 it was 10%, twice that of the 1980s.
- In the past people stored knowledge in books Nowadays people store knowledge on the internet Do you think the advantages outweigh the disadvantages 84
- The chart below shows information about the problems people have when they go to live in other countries Summarise the information by selecting and reporting the main features and make comparisons where relevant
- arrests per year for using illegal drugs from 1991 to 2005 67
- International tourism has brought enormous benefit to many places At the same time there is concern about its impact on local inhabitants and the environment Do the disadvantages of international tourism outweigh the advantages 56
- significant rise in world trade 22