the diagram below show how sand dunes are formed

The diagrams illustrate the process of forming sand dunes from sand particles under the action of wind.
Overall, the process has three major stages, beginning with assembling small sand particles in the wet grounds and ending with shaping gradually sand dunes.
The process commences with the natural movement of wind on the sand terrain. Consequently, the wind makes grains of sand roll on the dry surface. Following this, if these sand particles roll on the wet ground, they are kept above the wet area to gather together. In the next stage, because of the consistent force of wind, the gathers of sand particles continue to being accumulate and the sand dune is evolved gradually.
The process continues when the first sand dune is finished. Nevertheless, the wind still does not halt rolling the sand particles, so the assembledges of sand are built continuously. Finally, as a result, there are many sand dunes are formed behind the first formation.

Votes
Average: 6.1 (1 vote)

Transition Words or Phrases used:
consequently, finally, first, if, nevertheless, so, still, as a result

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

Performance on Part of Speech:
To be verbs : 7.0 7.0 100% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 2.0 6.8 29% => More conjunction wanted.
Relative clauses : 1.0 3.15609756098 32% => OK
Pronoun: 3.0 5.60731707317 54% => OK
Preposition: 23.0 33.7804878049 68% => OK
Nominalization: 2.0 3.97073170732 50% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 803.0 965.302439024 83% => OK
No of words: 158.0 196.424390244 80% => More content wanted.
Chars per words: 5.08227848101 4.92477711251 103% => OK
Fourth root words length: 3.54539209256 3.73543355544 95% => OK
Word Length SD: 2.62273624167 2.65546596893 99% => OK
Unique words: 93.0 106.607317073 87% => More unique words wanted.
Unique words percentage: 0.588607594937 0.547539520022 108% => OK
syllable_count: 235.8 283.868780488 83% => OK
avg_syllables_per_word: 1.5 1.45097560976 103% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 1.53170731707 65% => OK
Article: 7.0 4.33902439024 161% => OK
Subordination: 3.0 1.07073170732 280% => Less adverbial clause wanted.
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 2.0 3.36585365854 59% => More preposition wanted as sentence beginning.

Performance on sentences:
How many sentences: 9.0 8.94146341463 101% => OK
Sentence length: 17.0 22.4926829268 76% => The Avg. Sentence Length is relatively short.
Sentence length SD: 34.174208743 43.030603864 79% => OK
Chars per sentence: 89.2222222222 112.824112599 79% => OK
Words per sentence: 17.5555555556 22.9334400587 77% => OK
Discourse Markers: 7.77777777778 5.23603664747 149% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 0.0 1.69756097561 0% => OK
Sentences with positive sentiment : 1.0 3.70975609756 27% => More positive sentences wanted.
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 8.0 4.09268292683 195% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.283859034058 0.215688989381 132% => OK
Sentence topic coherence: 0.144374037721 0.103423049105 140% => OK
Sentence topic coherence SD: 0.0909536187646 0.0843802449381 108% => OK
Paragraph topic coherence: 0.210173009857 0.15604864568 135% => OK
Paragraph topic coherence SD: 0.0999399745165 0.0819641961636 122% => OK

Essay readability:
automated_readability_index: 11.3 13.2329268293 85% => Automated_readability_index is low.
flesch_reading_ease: 62.68 61.2550243902 102% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 8.7 10.3012195122 84% => OK
coleman_liau_index: 11.89 11.4140731707 104% => OK
dale_chall_readability_score: 8.48 8.06136585366 105% => OK
difficult_words: 40.0 40.7170731707 98% => OK
linsear_write_formula: 7.5 11.4329268293 66% => OK
gunning_fog: 8.8 10.9970731707 80% => OK
text_standard: 9.0 11.0658536585 81% => OK
What are above readability scores?

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Rates: 61.797752809 out of 100
Scores by essay e-grader: 5.5 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.