Both the reading and the lecture are about the Steller's sea cow which used to live on the coast of Siberia. The author of the reading provides us with three reasons for the extinction of this creature. While on contrary the lecturer casts doubts on those reasons.
First, the author points out that the Stellers most probably has been extinct due to the overhunting by the Siberian people. The reoccurrence of the hunting over hundreds of years will sure lead to this species to disappear. The lecture challenges this point. He says that due to the Steller's body specifications, it is really unconvincing to consider overhunting is the reason for the extinction. Steller's body is too large that a couple of them are enough to feed a Sibrian village for a month.
second, the author conducts that the disturbance of the sea ecosystem may be another reason for the extinction. As it is mentioned, the disturbance of the ecosystem led to a decrease in the availability of kelp which is the main food source for Stellers. As a consequence, the Stellers population decreased until extinction. The lecturer rebates on this reason. He states the this is not true. If there was an ecosystem disturbance, the whale population will be affected too, but this didn't happen. For sure the Steller extinction was not for the disturbance in the ecosystem.
Finally, the author writes that the third reason for the extinction may be due to the hunting by the fur traders. As the article mentions that the last sea cow was caught by fur trader in 1741. The lecturer totally disagrees with this idea. He says that the stellers are distinct hundred of years before the Europian fur traders access this area. It is not logical at all to consider the Europian traders as a reason.
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Grammar and spelling errors:
Line 1, column 203, Rule ID: SENTENCE_FRAGMENT[1]
Message: “While” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...ns for the extinction of this creature. While on contrary the lecturer casts doubts o...
^^^^^
Line 3, column 2, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Second
...o feed a Sibrian village for a month. second, the author conducts that the disturban...
^^^^^^
Line 3, column 373, Rule ID: DT_DT[2]
Message: Maybe you need to remove the second determiner so that only 'the' or 'this' is left.
Suggestion: the; this
...turer rebates on this reason. He states the this is not true. If there was an ecosystem ...
^^^^^^^^
Line 3, column 486, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: didn't
...pulation will be affected too, but this didnt happen. For sure the Steller extinction...
^^^^^
Line 4, column 115, Rule ID: SENTENCE_FRAGMENT[1]
Message: “As” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
... due to the hunting by the fur traders. As the article mentions that the last sea ...
^^
Transition Words or Phrases used:
but, finally, first, if, may, really, second, so, third, while
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 17.0 10.4613686534 163% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 2.0 7.30242825607 27% => More conjunction wanted.
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 38.0 30.3222958057 125% => OK
Nominalization: 14.0 5.01324503311 279% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1458.0 1373.03311258 106% => OK
No of words: 304.0 270.72406181 112% => OK
Chars per words: 4.79605263158 5.08290768461 94% => OK
Fourth root words length: 4.17559525986 4.04702891845 103% => OK
Word Length SD: 2.72946246978 2.5805825403 106% => OK
Unique words: 146.0 145.348785872 100% => OK
Unique words percentage: 0.480263157895 0.540411800872 89% => More unique words wanted or less content wanted.
syllable_count: 443.7 419.366225166 106% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 11.0 8.23620309051 134% => OK
Subordination: 5.0 1.25165562914 399% => Less adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 20.0 13.0662251656 153% => OK
Sentence length: 15.0 21.2450331126 71% => The Avg. Sentence Length is relatively short.
Sentence length SD: 32.5109212419 49.2860985944 66% => OK
Chars per sentence: 72.9 110.228320801 66% => OK
Words per sentence: 15.2 21.698381199 70% => OK
Discourse Markers: 3.1 7.06452816374 44% => More transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 5.0 4.19205298013 119% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 11.0 4.27373068433 257% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.290633642957 0.272083759551 107% => OK
Sentence topic coherence: 0.0851510585517 0.0996497079465 85% => OK
Sentence topic coherence SD: 0.0750322139556 0.0662205650399 113% => OK
Paragraph topic coherence: 0.177061038657 0.162205337803 109% => OK
Paragraph topic coherence SD: 0.0450595129078 0.0443174109184 102% => OK
Essay readability:
automated_readability_index: 8.8 13.3589403974 66% => Automated_readability_index is low.
flesch_reading_ease: 64.71 53.8541721854 120% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.0 11.0289183223 73% => OK
coleman_liau_index: 9.97 12.2367328918 81% => OK
dale_chall_readability_score: 7.65 8.42419426049 91% => OK
difficult_words: 63.0 63.6247240618 99% => OK
linsear_write_formula: 6.5 10.7273730684 61% => OK
gunning_fog: 8.0 10.498013245 76% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
---------------------
Rates: 71.6666666667 out of 100
Scores by essay e-grader: 21.5 Out of 30
---------------------
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.