The reading passage suggests three theories to explain the possible cause of the extinction of Steller's sea cow that lived in Bering Island off the coast of Siberia. However, the speaker rejects all of them, arguing that there is a problem with each of the theory.
First, the author claims that native Siberian people responsible for the extinction of the sea cow due to overhunting. The professor refutes this point by pointing out that the sea cow is a massive creature 9 meters long, 10 tons weight and the native Siberian people are not large. Hence, there is no need to hunt a lot of sea cow to feed the people. As a result, Siberian people are not the cause of extinction of the sea cow as the passage suggests.
Furthermore, the writer states that there was an ecosystem disturbance which affected the kelp(the main source of food for the sea cow) and consequently affected the sea cow. Nonetheless, the speaker rebuts this claim by saying that if there was a severe disturbance in the ecosystem it would affect the other marine animals such as whales. But there is nothing reported about the decline of the whales, and that excludes the kelp from being the cause of the extinction of the sea cow. Thus this theory also is unconvincing.
Finally, although the writer suggests that European fur trader may be the cause of the extinction of the sea cow. This point is challenged by the speaker. He argues that there is a decline in sea cow population even before the arrival of the European trader. Therefore, the trader is not the cause of extinction of the sea cow.
Grammar and spelling errors:
Line 5, column 135, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... the main source of food for the sea cow and consequently affected the sea cow. N...
^^
Line 5, column 487, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Thus,
...cause of the extinction of the sea cow. Thus this theory also is unconvincing. Fi...
^^^^
Transition Words or Phrases used:
also, but, consequently, finally, first, furthermore, hence, however, if, may, nonetheless, so, therefore, thus, such as, as a result
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 14.0 10.4613686534 134% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 16.0 22.412803532 71% => OK
Preposition: 34.0 30.3222958057 112% => OK
Nominalization: 9.0 5.01324503311 180% => OK
Performance on vocabulary words:
No of characters: 1310.0 1373.03311258 95% => OK
No of words: 280.0 270.72406181 103% => OK
Chars per words: 4.67857142857 5.08290768461 92% => OK
Fourth root words length: 4.09062348924 4.04702891845 101% => OK
Word Length SD: 2.52796602922 2.5805825403 98% => OK
Unique words: 135.0 145.348785872 93% => More unique words wanted.
Unique words percentage: 0.482142857143 0.540411800872 89% => More unique words wanted or less content wanted.
syllable_count: 399.6 419.366225166 95% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 45.3141528551 49.2860985944 92% => OK
Chars per sentence: 93.5714285714 110.228320801 85% => OK
Words per sentence: 20.0 21.698381199 92% => OK
Discourse Markers: 9.5 7.06452816374 134% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.55511723278 0.272083759551 204% => OK
Sentence topic coherence: 0.213595403957 0.0996497079465 214% => Sentence topic similarity is high.
Sentence topic coherence SD: 0.130668289063 0.0662205650399 197% => OK
Paragraph topic coherence: 0.34650446539 0.162205337803 214% => OK
Paragraph topic coherence SD: 0.0637997520689 0.0443174109184 144% => OK
Essay readability:
automated_readability_index: 10.6 13.3589403974 79% => Automated_readability_index is low.
flesch_reading_ease: 68.1 53.8541721854 126% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.7 11.0289183223 79% => OK
coleman_liau_index: 9.86 12.2367328918 81% => OK
dale_chall_readability_score: 7.96 8.42419426049 94% => OK
difficult_words: 59.0 63.6247240618 93% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
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Rates: 60.0 out of 100
Scores by essay e-grader: 18.0 Out of 30
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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.