The main topic of both the reading and the lecture is about the main causes of the Steller's sea cows extinction. The reading passage claims that there are three theories and reasons for this phenomenon. On the other hand, the lecturer not only categorically casts doubt on every single point raised by the author of the reading passage through citing three counter-arguments but also believes that none of the mentioned theories is reasonable and enough clear and all of them have problems.
To begin with, the author establishes that due to the fact that Sea cows were a great food resource in a strict situation, therefore, the Siberian people might have hunted a large number of those animals. In contrast, the lecturer rebuts this idea, stating that a Sea cow was a huge and massive creature with nine meters long and more than ten tons weight which could feed a large number of the Siberian people; however, the population of Siberian people was not sufficiently large to need to that amount of food resources to hunt and led the sea cows to become extinct.
Furthermore, the reading passage brings up this idea that the destruction of ecosystems might be a reason for that huge extinction because it led to a decline in the food resources of those cows called kelp. Conversely, the lecturer supports a mutually exclusive view compared to that of the passage and explains that the mentioned phenomenon really happened in 1768 but it did not just affect kelp, it led to a decrease in other marine animals as well. However, under such a circumstance, no decline in the population of whales was observed. He also mentions that at that time, kelp grew very well and no decrease in the amount of that plant was reported.
Eventually, the reading passage goes on to mention that another theory for the extinction of those animals could have been the European fur traders. Notwithstanding, the lecturer points out that it is true that the extinction of those animals happened after European arrived; however, the population of sea cows was already quite small before European traders arrived in that area. Consequently, this theory does not seem reasonable and there is another reason for this huge extinction
Grammar and spelling errors:
Line 3, column 173, Rule ID: LARGE_NUMBER_OF[1]
Message: Specify a number, remove phrase, or simply use 'many' or 'numerous'
Suggestion: many; numerous
..., the Siberian people might have hunted a large number of those animals. In contrast, the lecture...
^^^^^^^^^^^^^^^^^
Line 3, column 374, Rule ID: LARGE_NUMBER_OF[1]
Message: Specify a number, remove phrase, or simply use 'many' or 'numerous'
Suggestion: many; numerous
...e than ten tons weight which could feed a large number of the Siberian people; however, the popul...
^^^^^^^^^^^^^^^^^
Transition Words or Phrases used:
also, but, consequently, conversely, furthermore, however, really, so, therefore, well, in contrast, it is true, to begin with, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 12.0 7.30242825607 164% => OK
Relative clauses : 18.0 12.0772626932 149% => OK
Pronoun: 32.0 22.412803532 143% => Less pronouns wanted
Preposition: 49.0 30.3222958057 162% => OK
Nominalization: 12.0 5.01324503311 239% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1845.0 1373.03311258 134% => OK
No of words: 374.0 270.72406181 138% => Less content wanted.
Chars per words: 4.93315508021 5.08290768461 97% => OK
Fourth root words length: 4.3976220399 4.04702891845 109% => OK
Word Length SD: 2.68235128871 2.5805825403 104% => OK
Unique words: 186.0 145.348785872 128% => OK
Unique words percentage: 0.497326203209 0.540411800872 92% => More unique words wanted or less content wanted.
syllable_count: 568.8 419.366225166 136% => 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
Article: 12.0 8.23620309051 146% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 31.0 21.2450331126 146% => The Avg. Sentence Length is relatively long.
Sentence length SD: 84.9648211517 49.2860985944 172% => OK
Chars per sentence: 153.75 110.228320801 139% => OK
Words per sentence: 31.1666666667 21.698381199 144% => OK
Discourse Markers: 12.0833333333 7.06452816374 171% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
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: 17.4 13.3589403974 130% => OK
flesch_reading_ease: 48.47 53.8541721854 90% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 14.2 11.0289183223 129% => OK
coleman_liau_index: 11.91 12.2367328918 97% => OK
dale_chall_readability_score: 8.21 8.42419426049 97% => OK
difficult_words: 72.0 63.6247240618 113% => OK
linsear_write_formula: 14.0 10.7273730684 131% => OK
gunning_fog: 14.4 10.498013245 137% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
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Write the essay in 20 minutes.
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.