The article discusses the main causes of extinction of Steller's sea cow that lived in the waters around bering island off the coast of Siberia and provides three reasons of support. However, the professor claims that we actually do not know what happen exactly that cause extinction of this animal and he refutes each of the author's reasons.
First, the reading suggests that overhunting by a certain population of Siberian people leads to extinction of the sea cows. The professor argues this point by explaining that the size of sea cows are huge in the way that if these people hunted a small number of the sea cows could feed them for a month. Therefore, the professor emphasizes that there is no need to hunt a lot in order to provide food for Siberian people.
Second, the article claims that ecological disturbance could haven caused extinction of sea cows because they lacked their source of food, which is known as kelp. On the other hand, the professor proposed that if this hypotheses is correct, so all the ecological system should be affected, and we would have to see other animals are extinct or become decline in population. According to report, there is no evidence that suggest decline in marine population like whales. The professor concludes that sea cows and other marine animals were growing fine and there is no food shortage.
Third, the article states that European fur trader could have been the real cause why the sea cows were extinct. The professor disagrees with this point for the reason that when European arrived to the land, the sea cows had already become decline in population. Also, the professor explains that extinction of the sea cows have been happened hundreds years before European arrival. As the result there are no relation between fur trader people and extinction of the sea cows.
- TPO-15 - Integrated Writing Task The cane toad is a large (1.8 kg) amphibian species native to Central and South America. It was deliberately introduced to Australia in 1935 with the expectation that it would protect farmers' crops by eating harmful insec 73
- TPO-49 - Independent Writing Task Do you agree or disagree with the following statement?The ability to maintain friendships with a small number of people over a long period of time is more important for happiness than the ability to make many new friends 70
- TPO-28 - Integrated Writing Task Robert E. Peary was a well-known adventurer and arctic explorer who in 1909 set out to reach the North Pole. When he returned from the expedition, he claimed to have reached the pole on April 7, 1909. This report made him 61
- TPO-15 - Integrated Writing Task The cane toad is a large (1.8 kg) amphibian species native to Central and South America. It was deliberately introduced to Australia in 1935 with the expectation that it would protect farmers' crops by eating harmful insec 73
- TPO-15 - Integrated Writing Task The cane toad is a large (1.8 kg) amphibian species native to Central and South America. It was deliberately introduced to Australia in 1935 with the expectation that it would protect farmers' crops by eating harmful insec 85
Grammar and spelling errors:
Line 3, column 246, Rule ID: SMALL_NUMBER_OF[1]
Message: Specify a number, remove phrase, use 'a few', or use 'some'
Suggestion: a few; some
... in the way that if these people hunted a small number of the sea cows could feed them for a mont...
^^^^^^^^^^^^^^^^^
Line 5, column 214, Rule ID: THIS_NNS[1]
Message: Did you mean 'these'?
Suggestion: these
...er hand, the professor proposed that if this hypotheses is correct, so all the ecolo...
^^^^
Transition Words or Phrases used:
actually, also, first, however, if, second, so, therefore, third, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 6.0 5.04856512141 119% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 16.0 12.0772626932 132% => OK
Pronoun: 25.0 22.412803532 112% => OK
Preposition: 35.0 30.3222958057 115% => OK
Nominalization: 13.0 5.01324503311 259% => Less nominalization wanted.
Performance on vocabulary words:
No of characters: 1528.0 1373.03311258 111% => OK
No of words: 311.0 270.72406181 115% => OK
Chars per words: 4.91318327974 5.08290768461 97% => OK
Fourth root words length: 4.19942759058 4.04702891845 104% => OK
Word Length SD: 2.42547761419 2.5805825403 94% => OK
Unique words: 162.0 145.348785872 111% => OK
Unique words percentage: 0.520900321543 0.540411800872 96% => OK
syllable_count: 469.8 419.366225166 112% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 3.25607064018 0% => OK
Interrogative: 0.0 0.116997792494 0% => OK
Article: 12.0 8.23620309051 146% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 35.1032290023 49.2860985944 71% => OK
Chars per sentence: 117.538461538 110.228320801 107% => OK
Words per sentence: 23.9230769231 21.698381199 110% => OK
Discourse Markers: 6.38461538462 7.06452816374 90% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.539422721143 0.272083759551 198% => OK
Sentence topic coherence: 0.208139127087 0.0996497079465 209% => Sentence topic similarity is high.
Sentence topic coherence SD: 0.11927615212 0.0662205650399 180% => OK
Paragraph topic coherence: 0.336313471708 0.162205337803 207% => OK
Paragraph topic coherence SD: 0.0706562305699 0.0443174109184 159% => OK
Essay readability:
automated_readability_index: 13.7 13.3589403974 103% => 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: 8.13 8.42419426049 97% => OK
difficult_words: 66.0 63.6247240618 104% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 12.0 11.2008830022 107% => 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.