The reading and the lecture are both contradicting with each other, in terms of extinction of a huge marine mammal name as Steller's sea cow. The author of the article presented three theories about the reason for extinction. However, the lecturer casts doubt about the claim presented in the article and refutes all the ideas explained in the passage.
First of all, according to the article, one of the causes for extinction might be the reason of overhunting by the native Siberian people for their food source. On the contrary, the speaker undermines the argument presented in the paragraph. Furthermore, he discusses that Siberian people used to live in small groups, and on the other side, this animal was enormous in the number. So, even though they hunted a sea cow for their food source, but they did not need to hunt them in large amount which shows that they were not a cause for extinction.
Secondly, the author posits that they became extinct because of disturbances in the ecosystem that led to a decline in kelp plant which was the main food source for mammals. Although the lecturer refutes this by asserting that there were other marine animals were also declined if the ecological disturbances had occurred. Unfortunately, there were not data complaining about it. Thus, it was not a factor for extinction.
Finally, it is mentioned in the article that the European trader might have hunted the sea cow. On the other hand, the speaker believes that the sea cow was already reduced in the number when European came first in 1700. Hence, there would have some serious consequences occurred which lead to the extinction of a sea cow.
Transition Words or Phrases used:
also, but, finally, first, furthermore, hence, however, if, second, secondly, so, thus, first of all, on the contrary, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 34.0 30.3222958057 112% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1375.0 1373.03311258 100% => OK
No of words: 281.0 270.72406181 104% => OK
Chars per words: 4.89323843416 5.08290768461 96% => OK
Fourth root words length: 4.09427095027 4.04702891845 101% => OK
Word Length SD: 2.58265915118 2.5805825403 100% => OK
Unique words: 151.0 145.348785872 104% => OK
Unique words percentage: 0.537366548043 0.540411800872 99% => OK
syllable_count: 425.7 419.366225166 102% => 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: 6.0 8.23620309051 73% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 39.8653345397 49.2860985944 81% => OK
Chars per sentence: 98.2142857143 110.228320801 89% => OK
Words per sentence: 20.0714285714 21.698381199 93% => OK
Discourse Markers: 9.71428571429 7.06452816374 138% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 6.0 4.27373068433 140% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.417490393124 0.272083759551 153% => OK
Sentence topic coherence: 0.130537554246 0.0996497079465 131% => OK
Sentence topic coherence SD: 0.0918530700356 0.0662205650399 139% => OK
Paragraph topic coherence: 0.239200862905 0.162205337803 147% => OK
Paragraph topic coherence SD: 0.0986320029622 0.0443174109184 223% => More connections among paragraphs wanted.
Essay readability:
automated_readability_index: 11.6 13.3589403974 87% => Automated_readability_index is low.
flesch_reading_ease: 59.64 53.8541721854 111% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.9 11.0289183223 90% => OK
coleman_liau_index: 11.08 12.2367328918 91% => OK
dale_chall_readability_score: 7.89 8.42419426049 94% => OK
difficult_words: 58.0 63.6247240618 91% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
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Rates: 75.0 out of 100
Scores by essay e-grader: 22.5 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.