TPO 34- A huge marine mammal known as Steller’s sea cow once lived in the waters around Bering Island off the coast of Siberia. It was described in 1741 by Georg W. Steller, a naturalist who was among the first European to see one. In 1768 the animal became extinct. The reasons for the extinction are not clear. Here are three theories about the main cause of the extinction.
The reading and lecture are both about Stellar sea cow found in Bering Island. The author states three theories to support the cause of the extinction of the sea cow. However, the lecturer casts doubts about the claims made in the article and refutes all the theories presented in the reading passage.
First of all, the author points out that the cause of decline of the population of sea cow was due to overhunting by native Siberian tribes. Conversely, the point is challenged by the lecturer. He says that sea cow was a massive creature that is 9 meters long and weight 10 tons. Furthermore, he argues that a couple of sea cow can feed the tribe for months. In addition, the population of the Siberian community is small, so they are not the culprit for the extinction of the sea cow.
Secondly, the author contends that sea cow become extinct due to ecosystem disturbance which resulted in the decline of their main food source kelp. The article establishes that kelp cannot adapt to the ecological changes in the Bering island. On the contrary, the lecturer rebuts this argument. He suggests that the ecosystem disturbance will affect all the species in the environment such as whale. Moreover, he elaborates on this by mentioning that the population of whale did not dropped and fishing ship did not report decline in the number of whale in the Bering Island. In addition, kelp plant was growing fine and sea cow did not experience food shortage.
Finally, the author states that the European fur traders who came to the island and hunted the last sea cow in 1796. The article denotes that European traders had high caliber weapons that can easily kill large number of animals. The lecturer, on the other hand, posits that when the European traders arrived the population of sea cow was already small. The largest population of sea cow was before 1700's and the serious decline in the population of sea cow happened before the European arrived.
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Grammar and spelling errors:
Line 5, column 178, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ource kelp. The article establishes that kelp cannot adapt to the ecological chan...
^^
Line 5, column 486, Rule ID: DID_BASEFORM[1]
Message: The verb 'did' requires the base form of the verb: 'drop'
Suggestion: drop
...ng that the population of whale did not dropped and fishing ship did not report decline...
^^^^^^^
Line 7, column 355, 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.
...opulation of sea cow was already small. The largest population of sea cow was befor...
^^^
Transition Words or Phrases used:
but, conversely, finally, first, furthermore, however, moreover, second, secondly, so, in addition, such as, 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 : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 44.0 30.3222958057 145% => OK
Nominalization: 15.0 5.01324503311 299% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1623.0 1373.03311258 118% => OK
No of words: 337.0 270.72406181 124% => OK
Chars per words: 4.81602373887 5.08290768461 95% => OK
Fourth root words length: 4.28457229495 4.04702891845 106% => OK
Word Length SD: 2.48063762613 2.5805825403 96% => OK
Unique words: 160.0 145.348785872 110% => OK
Unique words percentage: 0.474777448071 0.540411800872 88% => More unique words wanted or less content wanted.
syllable_count: 497.7 419.366225166 119% => 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: 13.0 8.23620309051 158% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 18.0 13.0662251656 138% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 32.7631323213 49.2860985944 66% => OK
Chars per sentence: 90.1666666667 110.228320801 82% => OK
Words per sentence: 18.7222222222 21.698381199 86% => OK
Discourse Markers: 8.72222222222 7.06452816374 123% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 8.0 4.45695364238 179% => 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: 0.521610054621 0.272083759551 192% => OK
Sentence topic coherence: 0.171221916994 0.0996497079465 172% => OK
Sentence topic coherence SD: 0.116532922282 0.0662205650399 176% => OK
Paragraph topic coherence: 0.32053273375 0.162205337803 198% => OK
Paragraph topic coherence SD: 0.0622721157584 0.0443174109184 141% => OK
Essay readability:
automated_readability_index: 10.6 13.3589403974 79% => Automated_readability_index is low.
flesch_reading_ease: 61.67 53.8541721854 115% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.1 11.0289183223 83% => OK
coleman_liau_index: 10.68 12.2367328918 87% => OK
dale_chall_readability_score: 8.0 8.42419426049 95% => OK
difficult_words: 74.0 63.6247240618 116% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 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.