A huge marine mammal known as Steller’s sea cow once lived in the waters around Bering Island off the coast of Siberia. It was described in 1741 by Georg W. Steller, a naturalist who was among the first Europeans to see one. In 1768 the animal became extintict.
The reading passage and the listening passage most certainly disagree on the topic just about how a marine mammal, sea cow became extinct in 1768. While the reading passage brings three theories to explain the extinction of these animals, the lecture casts doubt en each theory.
First of all, the reading passage mentions the over hunting by native as the first theory that cause the massive extinction of sea cows. On the other hand, the professor refutes this theory. He explains that sea cows were massive animal with more than ten tons of weight, which means that a couple of them were enough to feed a Siberian tribe. Siberian hunters did not hunted all of them, it is unlikely.
In addition, the article mentions that disturbances on the ecosystem causes a declined in their main source of food, a sea plant named, Kelt. However, the professor claims that ecosystems disturbances could cause decline in other species population. He points out the example of whales, to indicate that the ecosystem disturbance was not as broad as the article mentions. There is no evidence of any decline in whale population in that time for food shortening.
Finally, the reading passage states that hunting for Europeans fur trades was another factor that affected sea cows extinction. The professor refutes this argument, he explains that when Europeans came to the Island the sea cows population was quite small almost a hundred years before Europeans arrive to the Island. Whatever could caused the extinct should be consider the main factor but not the European traders because they were the last to arrived the Island.
Grammar and spelling errors:
Line 1, column 83, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...age most certainly disagree on the topic just about how a marine mammal, sea cow ...
^^
Line 1, column 174, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...tinct in 1768. While the reading passage brings three theories to explain the ext...
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Line 2, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...he lecture casts doubt en each theory. First of all, the reading passage mentio...
^^^^^^^
Line 2, column 297, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...n ten tons of weight, which means that a couple of them were enough to feed a Sib...
^^
Line 2, column 377, Rule ID: DID_BASEFORM[1]
Message: The verb 'did' requires the base form of the verb: 'hunt'
Suggestion: hunt
...iberian tribe. Siberian hunters did not hunted all of them, it is unlikely. In addi...
^^^^^^
Line 3, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
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...ot hunted all of them, it is unlikely. In addition, the article mentions that d...
^^
Line 3, column 166, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...lant named, Kelt. However, the professor claims that ecosystems disturbances cou...
^^
Line 3, column 179, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...elt. However, the professor claims that ecosystems disturbances could cause decl...
^^
Line 3, column 396, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...e article mentions. There is no evidence of any decline in whale population in th...
^^
Line 4, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...tion in that time for food shortening. Finally, the reading passage states that...
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Line 4, column 227, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'cows'' or 'cow's'?
Suggestion: cows'; cow's
...en Europeans came to the Island the sea cows population was quite small almost a hun...
^^^^
Line 4, column 329, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
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...Europeans arrive to the Island. Whatever could caused the extinct should be consi...
^^
Line 4, column 337, Rule ID: DID_BASEFORM[1]
Message: The verb 'could' requires the base form of the verb: 'cause'
Suggestion: cause
...s arrive to the Island. Whatever could caused the extinct should be consider the mai...
^^^^^^
Line 4, column 366, Rule ID: SHOULD_BE_DO[1]
Message: Did you mean 'considered'?
Suggestion: considered
...ver could caused the extinct should be consider the main factor but not the European t...
^^^^^^^^
Line 4, column 374, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ld caused the extinct should be consider the main factor but not the European tra...
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Line 4, column 458, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...rs because they were the last to arrived the Island.
^^
Line 5, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... were the last to arrived the Island.
^^^^^^^^^^
Transition Words or Phrases used:
but, finally, first, however, so, while, in addition, in fact, first of all, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 2.0 7.30242825607 27% => More conjunction wanted.
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 21.0 22.412803532 94% => OK
Preposition: 30.0 30.3222958057 99% => OK
Nominalization: 10.0 5.01324503311 199% => OK
Performance on vocabulary words:
No of characters: 1351.0 1373.03311258 98% => OK
No of words: 269.0 270.72406181 99% => OK
Chars per words: 5.02230483271 5.08290768461 99% => OK
Fourth root words length: 4.0498419064 4.04702891845 100% => OK
Word Length SD: 2.44187837543 2.5805825403 95% => OK
Unique words: 156.0 145.348785872 107% => OK
Unique words percentage: 0.579925650558 0.540411800872 107% => OK
syllable_count: 414.9 419.366225166 99% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 36.482629408 49.2860985944 74% => OK
Chars per sentence: 103.923076923 110.228320801 94% => OK
Words per sentence: 20.6923076923 21.698381199 95% => OK
Discourse Markers: 7.23076923077 7.06452816374 102% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 17.0 4.19205298013 406% => Less language errors wanted.
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 8.0 4.45695364238 179% => OK
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.145786774754 0.272083759551 54% => OK
Sentence topic coherence: 0.0477103870619 0.0996497079465 48% => OK
Sentence topic coherence SD: 0.0505276425299 0.0662205650399 76% => OK
Paragraph topic coherence: 0.0839033293416 0.162205337803 52% => OK
Paragraph topic coherence SD: 0.0477755437781 0.0443174109184 108% => OK
Essay readability:
automated_readability_index: 12.6 13.3589403974 94% => Automated_readability_index is low.
flesch_reading_ease: 59.64 53.8541721854 111% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.9 11.0289183223 90% => OK
coleman_liau_index: 11.84 12.2367328918 97% => OK
dale_chall_readability_score: 8.21 8.42419426049 97% => OK
difficult_words: 61.0 63.6247240618 96% => OK
linsear_write_formula: 9.0 10.7273730684 84% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
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Rates: 78.3333333333 out of 100
Scores by essay e-grader: 23.5 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.