The reading and the lecture are both about the possible reasons for the extinction of Steller's Sea cow. The author of the reading believes that sea cows extincted due to human and environmental behavior. The lecturer casts doubts on the claims made in the reading. He thinks that the extinction of sea cows are unknown and humans and the environment is not the reason for its extinction.
First, the author claims that the sea cows extincted due to over hunting by groups of native Siberian people. He believes that hundreds of years off too much hunting by Siberians caused the decline of sea cows. This point in challenged by the lecturer. He says that Siberian people did not hunt sea cows. Furthermore, he points out that sea cows are massive creatures and weighs about 10 tonnes, so people cannot hunt these animals.
Secondly, the author states that the ecosystem disturbances affect the extinction of sea cows. He argues that the decrease of their main food source, kelp cause the decline of sea cows' population. This argument is rebutted by the lecturer. He suggests that the sea cows did not go extinct because of lack of kelp. He elaborates this point by mentioning that their no report mentioning extinction of other marine animals such as whales.
Finally, the author mentions that sea cows became extinct due to hunting by European fur traders. He is of the point that after the invasion of fur traders there was a rapid decline in sea cows. The lecturer, on the other hand, feels that fur traders are not responsible for the extinction of sea cows. He puts forth the idea that before the invasion of fur traders, the sea cow population has already been declined.
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Grammar and spelling errors:
Line 1, column 205, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...ue to human and environmental behavior. The lecturer casts doubts on the claims mad...
^^^
Transition Words or Phrases used:
but, finally, first, furthermore, second, secondly, so, such as, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 1.0 5.04856512141 20% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 14.0 12.0772626932 116% => OK
Pronoun: 30.0 22.412803532 134% => OK
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 10.0 5.01324503311 199% => OK
Performance on vocabulary words:
No of characters: 1396.0 1373.03311258 102% => OK
No of words: 290.0 270.72406181 107% => OK
Chars per words: 4.81379310345 5.08290768461 95% => OK
Fourth root words length: 4.12666770723 4.04702891845 102% => OK
Word Length SD: 2.50170928487 2.5805825403 97% => OK
Unique words: 140.0 145.348785872 96% => OK
Unique words percentage: 0.48275862069 0.540411800872 89% => More unique words wanted or less content wanted.
syllable_count: 414.9 419.366225166 99% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 11.0 3.25607064018 338% => Less pronouns wanted as sentence beginning.
Interrogative: 0.0 0.116997792494 0% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 18.0 13.0662251656 138% => OK
Sentence length: 16.0 21.2450331126 75% => OK
Sentence length SD: 26.2974438978 49.2860985944 53% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 77.5555555556 110.228320801 70% => OK
Words per sentence: 16.1111111111 21.698381199 74% => OK
Discourse Markers: 4.55555555556 7.06452816374 64% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 7.0 4.45695364238 157% => OK
Sentences with neutral sentiment: 10.0 4.27373068433 234% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.48502633137 0.272083759551 178% => OK
Sentence topic coherence: 0.182150296354 0.0996497079465 183% => OK
Sentence topic coherence SD: 0.0993514224971 0.0662205650399 150% => OK
Paragraph topic coherence: 0.326473880089 0.162205337803 201% => OK
Paragraph topic coherence SD: 0.0229599383743 0.0443174109184 52% => OK
Essay readability:
automated_readability_index: 9.3 13.3589403974 70% => Automated_readability_index is low.
flesch_reading_ease: 72.16 53.8541721854 134% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.2 11.0289183223 65% => Flesch kincaid grade is low.
coleman_liau_index: 10.32 12.2367328918 84% => OK
dale_chall_readability_score: 7.59 8.42419426049 90% => OK
difficult_words: 58.0 63.6247240618 91% => OK
linsear_write_formula: 7.5 10.7273730684 70% => Linsear_write_formula is low.
gunning_fog: 8.4 10.498013245 80% => OK
text_standard: 8.0 11.2008830022 71% => The average readability is low. Need to imporve the language.
What are above readability scores?
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Rates: 68.3333333333 out of 100
Scores by essay e-grader: 20.5 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.