sea cows' extinction
The material discusses the reasons od Steller's sea cows' extinction. While the reading looks at the topic from one perspective, the listening challenges certain points outlined in the reading passage.
First, the reading claims that Siberian people overhunted sea cows. On the contrary, the listening challenges this and states that sea cows were massive creatures, one of them was nine metter long and ten tons weight, so it could feed village of Siberian for a month, in addition to that, the Siberian population were not very large, thus, they did not need to hunt a lot of them and cause their extinction.
Second, the author mentions that ecosystem fluctuation declined kelp, which is the main source of food of the sea cows. On the other hand, the lecturer opposed this and explains that if there was ecosystems disturbances on 1768, it should decline other marines, such as whales; however, there is no report of any decline of whales at the same time, hence, kelp should grew fine and sea cows did not have any food shortage.
Third, the author posites that the European fur traders were responsible the extinction. Conversely, the professor contradicts this and states that when the European traders arrived, the sea cows populations was allready quite small, the populations were declined 100 of years before 1700, so there was something happened long before the European arrival and caused the extinction.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2019-12-18 | jeffhjz | 66 | view |
| 2019-11-29 | nagy | 73 | view |
| 2019-10-21 | Christine hanna | 88 | view |
| 2019-10-21 | Christine hanna | 83 | view |
| 2019-10-09 | Christine hanna | 60 | view |
Grammar and spelling errors:
Line 7, column 383, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...pean arrival and caused the extinction.
^^^^^^
Transition Words or Phrases used:
conversely, first, hence, however, if, look, second, so, third, thus, while, in addition, such as, on the contrary, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 16.0 22.412803532 71% => OK
Preposition: 19.0 30.3222958057 63% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1189.0 1373.03311258 87% => OK
No of words: 233.0 270.72406181 86% => More content wanted.
Chars per words: 5.10300429185 5.08290768461 100% => OK
Fourth root words length: 3.90696013833 4.04702891845 97% => OK
Word Length SD: 2.58090905797 2.5805825403 100% => OK
Unique words: 135.0 145.348785872 93% => More unique words wanted.
Unique words percentage: 0.579399141631 0.540411800872 107% => OK
syllable_count: 353.7 419.366225166 84% => 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: 11.0 8.23620309051 134% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 8.0 13.0662251656 61% => 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: 29.0 21.2450331126 137% => The Avg. Sentence Length is relatively long.
Sentence length SD: 107.633565281 49.2860985944 218% => The lengths of sentences changed so frequently.
Chars per sentence: 148.625 110.228320801 135% => OK
Words per sentence: 29.125 21.698381199 134% => OK
Discourse Markers: 16.625 7.06452816374 235% => Less transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
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: 0.168306809998 0.272083759551 62% => OK
Sentence topic coherence: 0.0824695907235 0.0996497079465 83% => OK
Sentence topic coherence SD: 0.0642488222185 0.0662205650399 97% => OK
Paragraph topic coherence: 0.103482274954 0.162205337803 64% => OK
Paragraph topic coherence SD: 0.0165123238624 0.0443174109184 37% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 17.2 13.3589403974 129% => OK
flesch_reading_ease: 50.5 53.8541721854 94% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 13.4 11.0289183223 121% => OK
coleman_liau_index: 12.89 12.2367328918 105% => OK
dale_chall_readability_score: 8.46 8.42419426049 100% => OK
difficult_words: 50.0 63.6247240618 79% => More difficult words wanted.
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 13.6 10.498013245 130% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
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Rates: 83.3333333333 out of 100
Scores by essay e-grader: 25.0 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.