34 - Integrated: Why did the sea cows in Siberia become extinct?

Essay topics:

34 - Integrated: Why did the sea cows in Siberia become extinct?

In this set of materials, the professor mainly discuses three reasons for the extinction of sea cow in 1768, while the professor casts doubt on what is presented in the text and believes that the main reason is still unknown and there are some problems for each of these hypothesizes.
First of all, in the text it is clearly mentioned that sea cows may have been overhunted by native Siberian people. However, the professor claims that the sea cows were massive creatures. In fact, there were about 9meters and had 10 tons weight; therefore, the couple of them were enough to feed a small village. Indeed, those people had fed from sea cows, but according to this issue that their population was not large, they did not need to hunt a lot of them to make them become extinct.
In addition, the professor disagree with the statement that the decline in kelps caused by ecosystem disturbance was the reason for sea cows extinction. He points out that before 1768 a number of ecological changes occurred which not only affected the kelp's life, but also some other creatures. For instance, some marine mammals, like whales. But there was not any report indicated the decrease in whales’ population. As a result, it seems that the kelps were growing fine and the sea cows had not encounter food shortage.
Finally, although in the text it is states that European fur trader who came to the island after 1741 are the main cause of extinction, the professor subscribes to the view point that based on some evidences, the fur traders might be one of the decline in the sea cows' population, but they were not the main reason. Because when they arrived to the island their population was quite small; consequently, there must be some other serious and ongoing factors which should be considered as main contributed elements. So, the traders were not responsible since they were just the last people who arrived there.

Votes
Average: 8.6 (1 vote)
Essay Categories

Comments

Grammar and spelling errors:
Line 3, column 253, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'kelps'' or 'kelp's'?
Suggestion: kelps'; kelp's
...es occurred which not only affected the kelps life, but also some other creatures. Fo...
^^^^^
Line 3, column 504, Rule ID: HAVE_PART_AGREEMENT[2]
Message: Possible agreement error -- use past participle here: 'encountered'.
Suggestion: encountered
...e growing fine and the sea cows had not encounter food shortage. Finally, although in ...
^^^^^^^^^
Line 4, column 266, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'cows'' or 'cow's'?
Suggestion: cows'; cow's
... might be one of the decline in the sea cows population, but they were not the main ...
^^^^
Line 5, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...st the last people who arrived there.  
^^^

Discourse Markers used:
['also', 'but', 'consequently', 'finally', 'first', 'however', 'if', 'may', 'so', 'still', 'therefore', 'while', 'for instance', 'in addition', 'in fact', 'as a result', 'first of all']

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance in Part of Speech:
Nouns: 0.237057220708 0.261695866417 91% => OK
Verbs: 0.149863760218 0.158904122519 94% => OK
Adjectives: 0.0626702997275 0.0723426182421 87% => OK
Adverbs: 0.0626702997275 0.0435111971325 144% => OK
Pronouns: 0.0354223433243 0.0277247811725 128% => OK
Prepositions: 0.125340599455 0.128828473217 97% => OK
Participles: 0.0272479564033 0.0370669169778 74% => OK
Conjunctions: 2.49940802221 2.5805825403 97% => OK
Infinitives: 0.0190735694823 0.0208969081088 91% => OK
Particles: 0.00272479564033 0.00154638098197 176% => OK
Determiners: 0.122615803815 0.128158765124 96% => OK
Modal_auxiliary: 0.0108991825613 0.0158828679856 69% => OK
WH_determiners: 0.0190735694823 0.0114777025283 166% => OK

Vocabulary words and sentences:
No of characters: 1925.0 1645.83664459 117% => OK
No of words: 331.0 271.125827815 122% => OK
Chars per words: 5.81570996979 6.08160592843 96% => OK
Fourth root words length: 4.26537283232 4.04852973271 105% => OK
words length more than 5 chars: 0.302114803625 0.374372842146 81% => OK
words length more than 6 chars: 0.229607250755 0.287516216867 80% => OK
words length more than 7 chars: 0.160120845921 0.187439937562 85% => OK
words length more than 8 chars: 0.114803625378 0.113142543107 101% => OK
Word Length SD: 2.49940802221 2.5805825403 97% => OK
Unique words: 184.0 145.348785872 127% => OK
Unique words percentage: 0.555891238671 0.539623497131 103% => OK
Word variations: 60.1868363344 53.8517498576 112% => OK
How many sentences: 13.0 13.0529801325 100% => OK
Sentence length: 25.4615384615 21.7502111507 117% => OK
Sentence length SD: 76.6927320411 49.3711431718 155% => OK
Chars per sentence: 148.076923077 132.220823453 112% => OK
Words per sentence: 25.4615384615 21.7502111507 117% => OK
Discourse Markers: 1.30769230769 0.878197800319 149% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 3.39072847682 118% => OK
Readability: 48.4222635371 50.5018328374 96% => OK
Elegance: 1.57142857143 1.90840788429 82% => OK

Coherence and Cohesion:
Essay topic to essay body coherence: 0.279350591666 0.549887131256 51% => OK
Sentence sentence coherence: 0.123467516779 0.142949733639 86% => OK
Sentence sentence coherence SD: 0.0557348477141 0.0787303798458 71% => OK
Sentence paragraph coherence: 0.569492396799 0.631733273073 90% => OK
Sentence paragraph coherence SD: 0.188285240839 0.139662658121 135% => OK
Sentence topic coherence: 0.122907702357 0.266732575781 46% => OK
Sentence topic coherence SD: 0.0777022479817 0.103435571967 75% => OK
Paragraph paragraph coherence: 0.375475233735 0.414875509568 91% => OK
Paragraph paragraph coherence SD: 0.0795932352598 0.0530846634433 150% => OK
Paragraph topic coherence: 0.202113573453 0.40443939384 50% => OK
Paragraph topic coherence SD: 0.0255781840252 0.0528353158467 48% => The ideas may be duplicated in paragraphs.

Task Achievement:
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 5.0 4.26048565121 117% => OK
Positive topic words: 3.0 3.49668874172 86% => OK
Negative topic words: 3.0 3.62251655629 83% => OK
Neutral topic words: 3.0 3.1766004415 94% => OK
Total topic words: 9.0 10.2958057395 87% => OK
What are sentences with positive/Negative/neutral sentiment?

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Rates: 86.6666666667 out of 100
Scores by essay e-grader: 26.0 Out of 30
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Note: This is not the final score. 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.