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

Essay topics:

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

The two pie charts compare five main sources of energy including: oil, natural gas, coal, hydroelectric power and nuclear power in America in two decades.
Overall, there is a lot of similarities between two graphs. In both years, oil was the type of energy that was used most, whereas, the consumption of hydroelectric power was less than four other categories.
In the 80s and 90s, the useage of natural gas was almost the same, about a quarter of the pie charts. The percentage of oil was 42%, which is the largest of the 1980s chart. In the 1990s, the proportion of oil was 9% less than the last decade.
In the 1980s, the data on coal was 5% and doubled in the next ten years. Meanwhile, hydroelectric power provided 5% in the USA in the 1980s. Ten years later, the consumption of hydroelectric power still remained the same. The percentage of coal is 22% and 27% respectively in the 80s and the 90s.

Votes
Average: 6.7 (1 vote)

Comments

Grammar and spelling errors:
Line 2, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...clear power in America in two decades. Overall, there is a lot of similarities ...
^^^^
Line 3, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...r was less than four other categories. In the 80s and 90s, the useage of natura...
^^^^
Line 4, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... oil was 9% less than the last decade. In the 1980s, the data on coal was 5% an...
^^^^

Transition Words or Phrases used:
so, still, whereas, while

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 10.0 7.0 143% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 5.0 6.8 74% => OK
Relative clauses : 2.0 3.15609756098 63% => OK
Pronoun: 1.0 5.60731707317 18% => OK
Preposition: 24.0 33.7804878049 71% => OK
Nominalization: 3.0 3.97073170732 76% => OK

Performance on vocabulary words:
No of characters: 746.0 965.302439024 77% => OK
No of words: 163.0 196.424390244 83% => More content wanted.
Chars per words: 4.57668711656 4.92477711251 93% => OK
Fourth root words length: 3.57311423478 3.73543355544 96% => OK
Word Length SD: 2.68429972537 2.65546596893 101% => OK
Unique words: 87.0 106.607317073 82% => More unique words wanted.
Unique words percentage: 0.533742331288 0.547539520022 97% => OK
syllable_count: 213.3 283.868780488 75% => OK
avg_syllables_per_word: 1.3 1.45097560976 90% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 1.53170731707 0% => OK
Article: 8.0 4.33902439024 184% => OK
Subordination: 0.0 1.07073170732 0% => More adverbial clause wanted.
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 5.0 3.36585365854 149% => OK

Performance on sentences:
How many sentences: 10.0 8.94146341463 112% => OK
Sentence length: 16.0 22.4926829268 71% => The Avg. Sentence Length is relatively short.
Sentence length SD: 32.1249124512 43.030603864 75% => OK
Chars per sentence: 74.6 112.824112599 66% => OK
Words per sentence: 16.3 22.9334400587 71% => OK
Discourse Markers: 2.5 5.23603664747 48% => More transition words/phrases wanted.
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 3.0 1.69756097561 177% => OK
Sentences with positive sentiment : 4.0 3.70975609756 108% => OK
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 6.0 4.09268292683 147% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.173103448741 0.215688989381 80% => OK
Sentence topic coherence: 0.0669564920593 0.103423049105 65% => OK
Sentence topic coherence SD: 0.0662048128915 0.0843802449381 78% => OK
Paragraph topic coherence: 0.106005492628 0.15604864568 68% => OK
Paragraph topic coherence SD: 0.0613061856812 0.0819641961636 75% => OK

Essay readability:
automated_readability_index: 8.3 13.2329268293 63% => Automated_readability_index is low.
flesch_reading_ease: 80.62 61.2550243902 132% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 6.0 10.3012195122 58% => Flesch kincaid grade is low.
coleman_liau_index: 8.99 11.4140731707 79% => OK
dale_chall_readability_score: 6.85 8.06136585366 85% => OK
difficult_words: 25.0 40.7170731707 61% => More difficult words wanted.
linsear_write_formula: 8.0 11.4329268293 70% => OK
gunning_fog: 8.4 10.9970731707 76% => OK
text_standard: 9.0 11.0658536585 81% => OK
What are above readability scores?

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Rates: 67.4157303371 out of 100
Scores by essay e-grader: 6.0 Out of 9
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.