The reading and the lecture are about the Steller’s extinction which used to live in the waters of Bering Island. George W had seen one in 1741 and in 1768 these species disappeared. The author believes that although the causes are not clear yet, he proposes some. The lecturer brings into question the claims made in the article. He considers that these were not the real problems which led to the animal’s extinction.
First, the author comes up with the idea that Siberian people caused the decrease of Stellers by overhunting them. It is mentioned that these species were a good source of food for natives. However, the professor argues that these creatures were massive (3m large and more than 10 tons), so, native people could not need much food for living well, therefore it is pointless to say that overhunting was the cause if they did not hunt a lot.
Second, the author states that ecosystem disturbance may affect these stellers by going down their primary source of food, the Kelp (kind of sea plant). The article notes that these plant species were extremely affected and decreased in population. The professor rebuts this argument by pointing out that these disturbances could not be a cause of extinction, because of the fact that any other marine animal was affected by this plant decreased.
Third, the author contends that European fur traders were recorded catching the last sea cow in 1768 which is a good reason to believe that they, killing steller for their fur, caused the animal extinction. The professor, on the other hand, posits that there are no traces that European had been in Siberia much before, as a result, they could not kill large numbers of stellers since their arrival, no many years before, until the animal fatality.
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Grammar and spelling errors:
Line 5, column 359, Rule ID: BECAUSE_OF_THE_FACT_THAT[1]
Message: This phrase is redundant. Use simply 'because'.
Suggestion: because
...ces could not be a cause of extinction, because of the fact that any other marine animal was affected by...
^^^^^^^^^^^^^^^^^^^^^^^^
Line 7, column 401, Rule ID: NOW[2]
Message: Did you mean 'now' (=at this moment) instead of 'no' (negation)?
Suggestion: now
...umbers of stellers since their arrival, no many years before, until the animal fat...
^^
Transition Words or Phrases used:
but, first, however, if, may, second, so, therefore, third, well, kind of, as a result, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 15.0 10.4613686534 143% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 17.0 12.0772626932 141% => OK
Pronoun: 34.0 22.412803532 152% => Less pronouns wanted
Preposition: 34.0 30.3222958057 112% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1476.0 1373.03311258 107% => OK
No of words: 300.0 270.72406181 111% => OK
Chars per words: 4.92 5.08290768461 97% => OK
Fourth root words length: 4.16179145029 4.04702891845 103% => OK
Word Length SD: 2.45437477895 2.5805825403 95% => OK
Unique words: 174.0 145.348785872 120% => OK
Unique words percentage: 0.58 0.540411800872 107% => OK
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: 4.0 3.25607064018 123% => OK
Article: 11.0 8.23620309051 134% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
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: 23.0 21.2450331126 108% => OK
Sentence length SD: 63.8551430187 49.2860985944 130% => OK
Chars per sentence: 113.538461538 110.228320801 103% => OK
Words per sentence: 23.0769230769 21.698381199 106% => OK
Discourse Markers: 8.07692307692 7.06452816374 114% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 8.0 4.45695364238 179% => 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: 0.321668690491 0.272083759551 118% => OK
Sentence topic coherence: 0.0999997776875 0.0996497079465 100% => OK
Sentence topic coherence SD: 0.0834457540322 0.0662205650399 126% => OK
Paragraph topic coherence: 0.17772372329 0.162205337803 110% => OK
Paragraph topic coherence SD: 0.0603111414557 0.0443174109184 136% => OK
Essay readability:
automated_readability_index: 13.3 13.3589403974 100% => 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: 11.55 12.2367328918 94% => OK
dale_chall_readability_score: 8.46 8.42419426049 100% => OK
difficult_words: 70.0 63.6247240618 110% => OK
linsear_write_formula: 6.5 10.7273730684 61% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Rates: 83 out of 100
Scores by essay e-grader: 25 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.