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

The pie charts illustrate the percentage of the major sources( oil, natural gas, coal, hydroelectric power, nuclear power), using to create energy in the USA between 1980 and 1990.
Overall, the top of consumption of sources was oil although, its contribution went down the fastest in total sources over a decade starting in 1980.
In 1980, 42% of total energy was produced by oil, this figure was almost two times as many as the percentage of coal and 16% more than that of natural gas. However, its spending dropped 11% to 33% 10 years later. On the contrary in 1990 witnessed a significant climb in the rate of nuclear power, a doubled increase from 5% to 10%. Furthermore, an upward trend of the proportion of coal, which was a traditional source to manufacture the energy, rose slightly by 5% beginning at 22%. In this year experienced a quite balance about the rate of three large below sources.
Over the following 10 years, the remainders( natural gas and hydroelectric power) maintained constantly their level, which accounted for 26% and 5% respectively, a reflection that the USA still used Hydropower as the weakest source.

Votes
Average: 7.8 (1 vote)

Grammar and spelling errors:
Line 3, column 509, Rule ID: A_RB_NN[1]
Message: You used an adverb ('quite') instead an adjective, or a noun ('balance') instead of another adjective.
...inning at 22%. In this year experienced a quite balance about the rate of three large below sou...
^^^^^^^^^^^^^^^^
Line 3, column 510, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...nning at 22%. In this year experienced a quite balance about the rate of three la...
^^
Line 4, column 232, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... used Hydropower as the weakest source.
^^

Transition Words or Phrases used:
but, furthermore, however, if, so, still, on the contrary

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

Performance on Part of Speech:
To be verbs : 4.0 7.0 57% => More to be verbs wanted.
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 4.0 6.8 59% => More conjunction wanted.
Relative clauses : 4.0 3.15609756098 127% => OK
Pronoun: 7.0 5.60731707317 125% => Less pronouns wanted
Preposition: 32.0 33.7804878049 95% => OK
Nominalization: 5.0 3.97073170732 126% => OK

Performance on vocabulary words:
No of characters: 943.0 965.302439024 98% => OK
No of words: 192.0 196.424390244 98% => OK
Chars per words: 4.91145833333 4.92477711251 100% => OK
Fourth root words length: 3.72241943641 3.73543355544 100% => OK
Word Length SD: 2.81017940529 2.65546596893 106% => OK
Unique words: 122.0 106.607317073 114% => OK
Unique words percentage: 0.635416666667 0.547539520022 116% => OK
syllable_count: 278.1 283.868780488 98% => OK
avg_syllables_per_word: 1.4 1.45097560976 96% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 1.53170731707 196% => OK
Article: 6.0 4.33902439024 138% => OK
Subordination: 0.0 1.07073170732 0% => More adverbial clause wanted.
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 4.0 3.36585365854 119% => OK

Performance on sentences:
How many sentences: 8.0 8.94146341463 89% => OK
Sentence length: 24.0 22.4926829268 107% => OK
Sentence length SD: 50.5092813253 43.030603864 117% => OK
Chars per sentence: 117.875 112.824112599 104% => OK
Words per sentence: 24.0 22.9334400587 105% => OK
Discourse Markers: 7.125 5.23603664747 136% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 3.0 1.69756097561 177% => OK
Sentences with positive sentiment : 6.0 3.70975609756 162% => OK
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 2.0 4.09268292683 49% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.115462275165 0.215688989381 54% => OK
Sentence topic coherence: 0.0443989730029 0.103423049105 43% => OK
Sentence topic coherence SD: 0.0418911331099 0.0843802449381 50% => Sentences are similar to each other.
Paragraph topic coherence: 0.0741192093084 0.15604864568 47% => OK
Paragraph topic coherence SD: 0.0309296556972 0.0819641961636 38% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.

Essay readability:
automated_readability_index: 13.7 13.2329268293 104% => OK
flesch_reading_ease: 64.04 61.2550243902 105% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 10.3 10.3012195122 100% => OK
coleman_liau_index: 11.49 11.4140731707 101% => OK
dale_chall_readability_score: 8.77 8.06136585366 109% => OK
difficult_words: 48.0 40.7170731707 118% => OK
linsear_write_formula: 10.5 11.4329268293 92% => OK
gunning_fog: 11.6 10.9970731707 105% => OK
text_standard: 9.0 11.0658536585 81% => OK
What are above readability scores?

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Rates: 78.6516853933 out of 100
Scores by essay e-grader: 7.0 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.