The reading passage contends that there are three theories in terms of extinction of Steller’s sea cow, who once lived in the waters around Bering Island off the coast Siberia. On the other hand, the lecturer brings about several point that contradict this argument.
First of all, the lecturer questions the theory in the reading passage that groups of native Siberian people have overhunted the sea cows. This is attributed to the fact that the native Siberian people were quite small so that they could not hunt the sea cows, which were massive creatures with 9 meter long and 10 ton weights. Thus, the reading passage’s first theory is invalid.
Moreover, the lecturer casts doubt on the theory in the passage that the sea cows may have been became extinct resulted from ecosystems disturbance that caused a decline in the sea cow’s food, kelp. This is because if kelp population have been declined by ecological changes, other marine creatures also would be declined. However, there is no report of a declines of other animal. It means that kelp would not be disturbed this theory suggests. Consequently, the reading passage’s second theory is contradicted.
Last but not least, the lecturer disagrees with the theory in the reading passage that the sea cow population may have hunted by European fur traders who came to the island after 1741 and possessed weapons that allowed them to quickly kill a large number of the animals. It is obvious that a large number of the animals already have been declined before their arrival. The process of declining was ongoing about 100 years ago. As a result, the reading passage’s final theory is refuted.
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Grammar and spelling errors:
Line 1, column 228, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun point seems to be countable; consider using: 'several points'.
Suggestion: several points
...e other hand, the lecturer brings about several point that contradict this argument. First o...
^^^^^^^^^^^^^
Line 3, column 97, Rule ID: BEEN_PART_AGREEMENT[1]
Message: Consider using a past participle here: 'become'.
Suggestion: become
...passage that the sea cows may have been became extinct resulted from ecosystems distur...
^^^^^^
Line 3, column 359, Rule ID: A_PLURAL[1]
Message: Don't use indefinite articles with plural words. Did you mean 'a decline' or simply 'declines'?
Suggestion: a decline; declines
...eclined. However, there is no report of a declines of other animal. It means that kelp wou...
^^^^^^^^^^
Line 4, column 241, Rule ID: LARGE_NUMBER_OF[1]
Message: Specify a number, remove phrase, or simply use 'many' or 'numerous'
Suggestion: many; numerous
...apons that allowed them to quickly kill a large number of the animals. It is obvious that a large...
^^^^^^^^^^^^^^^^^
Line 4, column 290, Rule ID: LARGE_NUMBER_OF[1]
Message: Specify a number, remove phrase, or simply use 'many' or 'numerous'
Suggestion: many; numerous
...mber of the animals. It is obvious that a large number of the animals already have been declined ...
^^^^^^^^^^^^^^^^^
Discourse Markers used:
['also', 'but', 'consequently', 'first', 'however', 'if', 'may', 'moreover', 'second', 'so', 'thus', 'as a result', 'first of all', 'on the other hand']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.268518518519 0.261695866417 103% => OK
Verbs: 0.151234567901 0.158904122519 95% => OK
Adjectives: 0.0802469135802 0.0723426182421 111% => OK
Adverbs: 0.0493827160494 0.0435111971325 113% => OK
Pronouns: 0.0154320987654 0.0277247811725 56% => OK
Prepositions: 0.12037037037 0.128828473217 93% => OK
Participles: 0.0432098765432 0.0370669169778 117% => OK
Conjunctions: 2.61216720846 2.5805825403 101% => OK
Infinitives: 0.00925925925926 0.0208969081088 44% => Some infinitives wanted.
Particles: 0.0 0.00154638098197 0% => OK
Determiners: 0.117283950617 0.128158765124 92% => OK
Modal_auxiliary: 0.0154320987654 0.0158828679856 97% => OK
WH_determiners: 0.0185185185185 0.0114777025283 161% => OK
Vocabulary words and sentences:
No of characters: 1679.0 1645.83664459 102% => OK
No of words: 278.0 271.125827815 103% => OK
Chars per words: 6.03956834532 6.08160592843 99% => OK
Fourth root words length: 4.08329915638 4.04852973271 101% => OK
words length more than 5 chars: 0.36690647482 0.374372842146 98% => OK
words length more than 6 chars: 0.26618705036 0.287516216867 93% => OK
words length more than 7 chars: 0.172661870504 0.187439937562 92% => OK
words length more than 8 chars: 0.0971223021583 0.113142543107 86% => OK
Word Length SD: 2.61216720846 2.5805825403 101% => OK
Unique words: 156.0 145.348785872 107% => OK
Unique words percentage: 0.561151079137 0.539623497131 104% => OK
Word variations: 57.5828555155 53.8517498576 107% => OK
How many sentences: 14.0 13.0529801325 107% => OK
Sentence length: 19.8571428571 21.7502111507 91% => OK
Sentence length SD: 65.2863785524 49.3711431718 132% => OK
Chars per sentence: 119.928571429 132.220823453 91% => OK
Words per sentence: 19.8571428571 21.7502111507 91% => OK
Discourse Markers: 1.0 0.878197800319 114% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 5.0 3.39072847682 147% => OK
Readability: 46.4758478931 50.5018328374 92% => OK
Elegance: 2.0 1.90840788429 105% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.740652623137 0.549887131256 135% => OK
Sentence sentence coherence: 0.108108080855 0.142949733639 76% => OK
Sentence sentence coherence SD: 0.0779411250886 0.0787303798458 99% => OK
Sentence paragraph coherence: 0.550015186407 0.631733273073 87% => OK
Sentence paragraph coherence SD: 0.184327591163 0.139662658121 132% => OK
Sentence topic coherence: 0.310225307265 0.266732575781 116% => OK
Sentence topic coherence SD: 0.187777151308 0.103435571967 182% => OK
Paragraph paragraph coherence: 0.452992032967 0.414875509568 109% => OK
Paragraph paragraph coherence SD: 0.0208284502608 0.0530846634433 39% => OK
Paragraph topic coherence: 0.574470926832 0.40443939384 142% => OK
Paragraph topic coherence SD: 0.0468607623472 0.0528353158467 89% => OK
Task Achievement:
Sentences with positive sentiment : 2.0 4.33554083885 46% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 7.0 4.26048565121 164% => OK
Positive topic words: 1.0 3.49668874172 29% => More positive topic words wanted.
Negative topic words: 5.0 3.62251655629 138% => OK
Neutral topic words: 7.0 3.1766004415 220% => OK
Total topic words: 13.0 10.2958057395 126% => 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.