The reading and the lecture are both about the possible reasons behind the declination of Steller's sea cow from Bering Island. The author of the reading suggests three possible reasons for this extinction. However, the professor refutes all ideas claims in the readings, and provides possible alternate reasoning of those hypotheses.
First of all, the author posits that since the native of Siberian people need food in and faced food shortage due to the harsh environment, they might have hunted sea cows for fulfill their basic food need, and this might be the responsible for the cows population declination. The professor rebuts this point and says that the sea cow was so massive size; they were about 9m long and 10 ton, and the Siberian population was not so large enough to eat up all of the sea cows. Therefore, Siberian population was not the main problem of this massive extinction.
Secondly, the reading mentions that before 1768 a severe environment change had occurred which lead sea cows' population decrease as food was so scarcity in that time. However, the lecturer challenges this hypothesis, and notes that if such harsh environment existed in that time period, there must have a bad impact on other animals like whales, but the fisher ship's never report anything like that. So, no such critical situation was occurred and ample amount of food for sea cows was available.
Finally, the writers points out that since the fur traders caught the last sea cow, they might have involving some extreme hunting like use of weapon, and caught all the sea cows. The professor, on the other hand, contends that the European fur traders was in the last point of the declination of sea cows, and they were not the reason for the whole population of sea cows reduction. He further mentions that as the process of reduction of sea cows was started long age before European Trader came to this areas, alternate possible reasons should find out.
Grammar and spelling errors:
Line 3, column 250, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'cows'' or 'cow's'?
Suggestion: cows'; cow's
...d this might be the responsible for the cows population declination. The professor r...
^^^^
Line 3, column 456, Rule ID: ALL_OF_THE[1]
Message: Simply use 'all the'.
Suggestion: all the
...ation was not so large enough to eat up all of the sea cows. Therefore, Siberian populatio...
^^^^^^^^^^
Line 7, column 502, Rule ID: THIS_NNS[1]
Message: Did you mean 'these'?
Suggestion: these
...long age before European Trader came to this areas, alternate possible reasons shoul...
^^^^
Transition Words or Phrases used:
but, finally, first, however, if, second, secondly, so, therefore, first of all, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 12.0 7.30242825607 164% => OK
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 23.0 22.412803532 103% => OK
Preposition: 38.0 30.3222958057 125% => OK
Nominalization: 16.0 5.01324503311 319% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1631.0 1373.03311258 119% => OK
No of words: 331.0 270.72406181 122% => OK
Chars per words: 4.92749244713 5.08290768461 97% => OK
Fourth root words length: 4.26537283232 4.04702891845 105% => OK
Word Length SD: 2.43317793653 2.5805825403 94% => OK
Unique words: 170.0 145.348785872 117% => OK
Unique words percentage: 0.513595166163 0.540411800872 95% => OK
syllable_count: 489.6 419.366225166 117% => 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: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 7.0 1.51434878587 462% => Less conjunction wanted as sentence beginning.
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 27.0 21.2450331126 127% => The Avg. Sentence Length is relatively long.
Sentence length SD: 58.8817081576 49.2860985944 119% => OK
Chars per sentence: 135.916666667 110.228320801 123% => OK
Words per sentence: 27.5833333333 21.698381199 127% => OK
Discourse Markers: 8.16666666667 7.06452816374 116% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.447676064659 0.272083759551 165% => OK
Sentence topic coherence: 0.180865930929 0.0996497079465 182% => OK
Sentence topic coherence SD: 0.0885174121059 0.0662205650399 134% => OK
Paragraph topic coherence: 0.273414958688 0.162205337803 169% => OK
Paragraph topic coherence SD: 0.0777425337627 0.0443174109184 175% => OK
Essay readability:
automated_readability_index: 15.6 13.3589403974 117% => OK
flesch_reading_ease: 52.53 53.8541721854 98% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.6 11.0289183223 114% => OK
coleman_liau_index: 11.61 12.2367328918 95% => OK
dale_chall_readability_score: 8.31 8.42419426049 99% => OK
difficult_words: 70.0 63.6247240618 110% => OK
linsear_write_formula: 14.0 10.7273730684 131% => OK
gunning_fog: 12.8 10.498013245 122% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 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.