The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Write a report for a university lecturer describing the changes which occurred

The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Write a report for a university lecturer describing the changes which occurred
IELTS Writing Task Chart for The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Write a report for a university lecturer describing the changes which occurred
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The two pie charts illustrate the essential energy sources of the USA between the 1980s and the 1990s.
Overall
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, oil is the largest contributor in two decades,
whereas
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Hydroelectric Power is the least important source. The energy sources may be changed because of the technology and natural resources. On the one hand, oil provided the country with more energy than others,
although
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it decreased during these periods from 42 per
cent
Use synonyms
to 33 in the 1980 and 1990 respectively.
Moreover
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, Hydroelectric Power helped a little the USA with 5 per
cent
Use synonyms
which did not change between these years.
Furthermore
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, Nuclear Power is a minor source which was 5 per
cent
Use synonyms
in 1980 and rose to 10 per
cent
Use synonyms
in 1990.
On the other hand
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, Natural Gas was the predominant supplier in the two terms. The use of it decreased slightly by 25 per
cent
Use synonyms
.
Additionally
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, another crucial factor, Coal increased from 22 per
cent
Use synonyms
in 1980 to 27 per
cent
Use synonyms
in 1990.

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Vocabulary: Replace the words cent with synonyms.
Vocabulary: The word "changed" was used 2 times.
Vocabulary: The word "decreased" was used 2 times.
Topic Vocabulary:
  • sources of energy
  • predominant
  • renewables
  • nuclear
  • significant increases
  • significant decreases
  • technological advancements
  • policy changes
  • trends
  • overall
  • preference
  • shifts
  • implications
  • future energy landscape
  • decades
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