In this set of material, the reading passage suggests three theories of the main cause of Steller's sea cow extinct. However, the lecture finds all the idea dubious and skeptical and unlikely to help them and provides some evidence to refute them all.
First of all, the reading passage states the extinction might be occurred because of the over hunted caused by the native Siberian people. As the sea cows were a good source of food in a harsh environment where the Siberian people live. On the contrary, the professor opposites this theory by explaining that the sea cows were very massive animals and weight above two tons, at the same time the Siberian population was very small. In order to that, it is unbelievable that such small population was fed on the large quantity of massive animals.
Furthermore, the reading passage poses that ecosystems disturbances might be another cause of sea cow extinction as they were made decline in the main source of food of the sea cows. Conversely, the professor refutes this reason by saying if that really was happened, it would affect other marine animals as well, because they also used to eat the kelp plant. But there were not any decline in other marine animals habitat.
Finally, the reading passage mentioned that the European people traders might caught the sea cows during their visit. In contrast, the professor refutes this reason by claims that the extinction was already done before the European trader came to the island, and they were the last people went to the island.
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Grammar and spelling errors:
Line 3, column 140, 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.
...d caused by the native Siberian people. As the sea cows were a good source of food...
^^
Line 5, column 408, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'animals'' or 'animal's'?
Suggestion: animals'; animal's
...re were not any decline in other marine animals habitat. Finally, the reading pass...
^^^^^^^
Line 5, column 425, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ecline in other marine animals habitat. Finally, the reading passage mentioned t...
^^^^^
Transition Words or Phrases used:
also, but, conversely, finally, first, furthermore, however, if, really, so, well, in contrast, first of all, on the contrary
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 8.0 12.0772626932 66% => More relative clauses wanted.
Pronoun: 19.0 22.412803532 85% => OK
Preposition: 33.0 30.3222958057 109% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1281.0 1373.03311258 93% => OK
No of words: 261.0 270.72406181 96% => OK
Chars per words: 4.90804597701 5.08290768461 97% => OK
Fourth root words length: 4.0193898071 4.04702891845 99% => OK
Word Length SD: 2.38693320508 2.5805825403 92% => OK
Unique words: 142.0 145.348785872 98% => OK
Unique words percentage: 0.544061302682 0.540411800872 101% => OK
syllable_count: 404.1 419.366225166 96% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 5.0 2.5761589404 194% => OK
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 40.6055404761 49.2860985944 82% => OK
Chars per sentence: 116.454545455 110.228320801 106% => OK
Words per sentence: 23.7272727273 21.698381199 109% => OK
Discourse Markers: 11.3636363636 7.06452816374 161% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.417625494893 0.272083759551 153% => OK
Sentence topic coherence: 0.161209878301 0.0996497079465 162% => OK
Sentence topic coherence SD: 0.108595536996 0.0662205650399 164% => OK
Paragraph topic coherence: 0.254390894705 0.162205337803 157% => OK
Paragraph topic coherence SD: 0.0302546551775 0.0443174109184 68% => OK
Essay readability:
automated_readability_index: 13.6 13.3589403974 102% => 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: 11.49 12.2367328918 94% => OK
dale_chall_readability_score: 8.04 8.42419426049 95% => OK
difficult_words: 54.0 63.6247240618 85% => More difficult words wanted.
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?
---------------------
Rates: 83 out of 100
Scores by essay e-grader: 25 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.