The two graphs show the main sources of energy in the USA in the 1980s and the 1990s

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The two graphs show the main sources of energy in the USA in the 1980s and the 1990s.

Both pie charts compare the percentage of energy resources in the United States of America in 1980 and 1990.

Overall, it can be seen that the greatest change was in the proportion of energy sources to the oils energy. Therefore, the smallest change was in the percentage of energy sources to the nuclear power and hydroelectric power.

In 1980, the most high percentage of oil energy was 42%, while in 1990 this proportion was a gradual decrease in 33%. In contrast, the second highest percentage was natural gas with 26% in 1980, while there was a slight decline in 25% in 1990. It is clear tha...

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Sentence: Overall, it can be seen that the greatest change was in the proportion of energy sources to the oils energy.
Description: The fragment Overall , is rare
Suggestion: Possible agreement error: Replace Overall with adverb
Description: A noun, plural, common is not usually followed by a noun, singular, common
Suggestion: Refer to oils and energy

the most high percentage of oil energy
the most highest percentage of oil energy

flaws:
How did you get this:
oil energy and natural gas had the same decrease

Need more sentence varieties:
Overall, it can be seen that the greatest change was in the proportion of energy sources to the oils energy. Therefore, the smallest change was in the percentage of energy sources to the nuclear power and hydroelectric power

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Score: 5.0 out of 9
Category: Satisfactory Excellent
No. of Grammatical Errors: 2 2
No. of Spelling Errors: 0 2
No. of Sentences: 10 10
No. of Words: 195 200
No. of Characters: 857 1000
No. of Different Words: 88 100
Fourth Root of Number of Words: 3.737 4.0
Average Word Length: 4.395 4.6
Word Length SD: 2.49 2.4
No. of Words greater than 5 chars: 56 60
No. of Words greater than 6 chars: 38 50
No. of Words greater than 7 chars: 20 40
No. of Words greater than 8 chars: 14 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 19.5 21.0
Sentence Length SD: 5.315 7.5
Use of Discourse Markers (%): 0.6 0.12
Sentence-Text Coherence: 0.481 0.35
Sentence-Para Coherence: 0.701 0.50
Sentence-Sentence Coherence: 0.191 0.07
Number of Paragraphs: 4 4