The reading introduces three possible reasons for the extinction of the Steller's sea cow, a huge marine mammal that once lived around Bering island off the coast of Siberia. The lecturer refutes all the given reasons and refutes each one of them.
First, the reading states that the first possible reason for the extinction of these mammals is hunting . The native people used it as a source of food. The lecturer, however, refutes this claim by stating the these animals has a huge massive size, and just one animal was able to feed very large numbers of people. With the relatively few population in area and the massive size of these animals, so it is unreasonable to consider that the hunting was the reason for the extinction of these animals.
Second, the reading suggests that the ecological change in the climate maybe the reason for the extinction of the see cows. The lecturer, on the other hand, rebuts this suggestion by saying that if the extinction was due to the climate change, it should have affected other animals like the whales which lived at the same time, but there is no evidence that supports this hypnosis.
Third, the reading mentions another possible reason which is the trading of the fur by European who came to the island, so they started over hunting these animals for the sake of its fur. The lecturer contends this claim by stating the arrival of those traders actually happened when the numbers of the sea cows had already decreased. In other words, the extinction started before the arriving of the European fur traders.
Finally, we can conclude that the exact reason for the extinction of the sea cows is uncertain or unknown until now. It is unlikely to be any of the reasons mentioned in the reading.
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Grammar and spelling errors:
Line 1, column 111, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...e Stellers sea cow, a huge marine mammal that once lived around Bering island off...
^^
Line 3, column 104, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...e extinction of these mammals is hunting . The native people used it as a source o...
^^
Line 3, column 337, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun population seems to be countable; consider using: 'few populations'.
Suggestion: few populations
... numbers of people. With the relatively few population in area and the massive size of these a...
^^^^^^^^^^^^^^
Transition Words or Phrases used:
actually, but, finally, first, however, if, may, second, so, third, in other words, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 2.0 5.04856512141 40% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 25.0 22.412803532 112% => OK
Preposition: 38.0 30.3222958057 125% => OK
Nominalization: 10.0 5.01324503311 199% => OK
Performance on vocabulary words:
No of characters: 1455.0 1373.03311258 106% => OK
No of words: 302.0 270.72406181 112% => OK
Chars per words: 4.8178807947 5.08290768461 95% => OK
Fourth root words length: 4.1687104957 4.04702891845 103% => OK
Word Length SD: 2.36574047385 2.5805825403 92% => OK
Unique words: 158.0 145.348785872 109% => OK
Unique words percentage: 0.523178807947 0.540411800872 97% => OK
syllable_count: 455.4 419.366225166 109% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Interrogative: 0.0 0.116997792494 0% => OK
Article: 11.0 8.23620309051 134% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 57.3686304814 49.2860985944 116% => OK
Chars per sentence: 111.923076923 110.228320801 102% => OK
Words per sentence: 23.2307692308 21.698381199 107% => OK
Discourse Markers: 7.76923076923 7.06452816374 110% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted.
Sentences with neutral sentiment: 9.0 4.27373068433 211% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0 0.272083759551 0% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0 0.0996497079465 0% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0 0.0662205650399 0% => Sentences are similar to each other.
Paragraph topic coherence: 0.0 0.162205337803 0% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0 0.0443174109184 0% => 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: 12.9 13.3589403974 97% => OK
flesch_reading_ease: 56.59 53.8541721854 105% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 10.97 12.2367328918 90% => OK
dale_chall_readability_score: 7.86 8.42419426049 93% => OK
difficult_words: 59.0 63.6247240618 93% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
---------------------
It is not exactly right on the topic in the view of e-grader. Maybe there is a wrong essay topic.
Rates: 3.33333333333 out of 100
Scores by essay e-grader: 1.0 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.