The lecturer disputes the author's suggested theories about how sea cows got extinct. He provides several reason to cast doubt about the author's claims.
first, according to the author, sea cows got extinct because of over hunting by the Native Siberians. The lecturer find this idea debatable, He asserts that sea cows were massive animals with 9 meters long and 10 Tons in weight. Native Siberians may have hunted this animal to feed on it. However, why should they hunt such a huge animal when they could be satisfied with smaller size animals to feed on them.
Second, the lecturer contradicts the fallacy of the passage that a change in ecosystem have cause a decline in Kelp which is a valuable food source for sea cows. He contends that it is unlikely that this was the reason for their extinction because other animals like whales which also feed on kelp have not decrease in number.Theoretically speaking , this scenario may have happened if whales got extinct as well.
Finally, the author claims that European traders may have hunted those animals because they want to sell their fur. Again, the lecturer refutes this claim by stating that this might have happened if these animals existed in big numbers. However, the data shows that sea cows were already few in number before the European arrived to this region Thus, it is most likely that some other reasons could have caused this problem,.
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Grammar and spelling errors:
Line 1, column 98, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun reason seems to be countable; consider using: 'several reasons'.
Suggestion: several reasons
...t how sea cows got extinct. He provides several reason to cast doubt about the authors claims....
^^^^^^^^^^^^^^
Line 3, column 1, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: First
...cast doubt about the authors claims. first, according to the author, sea cows got ...
^^^^^
Line 3, column 116, Rule ID: MASS_AGREEMENT[2]
Message: Possible agreement error - use third-person verb forms for singular and mass nouns: 'finds'.
Suggestion: finds
...g by the Native Siberians. The lecturer find this idea debatable, He asserts that se...
^^^^
Line 5, column 308, Rule ID: HAVE_PART_AGREEMENT[2]
Message: Possible agreement error -- use past participle here: 'decreased'.
Suggestion: decreased
...whales which also feed on kelp have not decrease in number.Theoretically speaking , this...
^^^^^^^^
Line 5, column 327, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Theoretically
...eed on kelp have not decrease in number.Theoretically speaking , this scenario may have happe...
^^^^^^^^^^^^^
Line 5, column 349, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...ecrease in number.Theoretically speaking , this scenario may have happened if whal...
^^
Line 6, column 288, Rule ID: ADJECTIVE_IN_ATTRIBUTE[1]
Message: A more concise phrase may lose no meaning and sound more powerful.
Suggestion: few
...e data shows that sea cows were already few in number before the European arrived to this reg...
^^^^^^^^^^^^^
Line 6, column 288, Rule ID: FEW_IN_NUMBER[1]
Message: Use simply 'few'.
Suggestion: few
...e data shows that sea cows were already few in number before the European arrived to this reg...
^^^^^^^^^^^^^
Line 6, column 423, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , .
...r reasons could have caused this problem,.
^^
Line 10, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...could have caused this problem,.
^^
Transition Words or Phrases used:
also, finally, first, however, if, may, second, so, thus, well
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 10.4613686534 67% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 1.0 7.30242825607 14% => More conjunction wanted.
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 30.0 22.412803532 134% => Less pronouns wanted
Preposition: 26.0 30.3222958057 86% => OK
Nominalization: 1.0 5.01324503311 20% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1180.0 1373.03311258 86% => OK
No of words: 239.0 270.72406181 88% => More content wanted.
Chars per words: 4.93723849372 5.08290768461 97% => OK
Fourth root words length: 3.93187294222 4.04702891845 97% => OK
Word Length SD: 2.37520466954 2.5805825403 92% => OK
Unique words: 141.0 145.348785872 97% => OK
Unique words percentage: 0.589958158996 0.540411800872 109% => OK
syllable_count: 360.0 419.366225166 86% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 6.0 8.23620309051 73% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => 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: 21.0 21.2450331126 99% => OK
Sentence length SD: 53.3962266906 49.2860985944 108% => OK
Chars per sentence: 107.272727273 110.228320801 97% => OK
Words per sentence: 21.7272727273 21.698381199 100% => OK
Discourse Markers: 5.63636363636 7.06452816374 80% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 10.0 4.19205298013 239% => Less language errors wanted.
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
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: 0.125586469169 0.272083759551 46% => OK
Sentence topic coherence: 0.0583201588584 0.0996497079465 59% => OK
Sentence topic coherence SD: 0.0622657355111 0.0662205650399 94% => OK
Paragraph topic coherence: 0.0868732625639 0.162205337803 54% => OK
Paragraph topic coherence SD: 0.0349535829079 0.0443174109184 79% => OK
Essay readability:
automated_readability_index: 12.7 13.3589403974 95% => OK
flesch_reading_ease: 58.62 53.8541721854 109% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 11.37 12.2367328918 93% => OK
dale_chall_readability_score: 8.05 8.42419426049 96% => OK
difficult_words: 51.0 63.6247240618 80% => More difficult words wanted.
linsear_write_formula: 6.0 10.7273730684 56% => Linsear_write_formula is low.
gunning_fog: 10.4 10.498013245 99% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
---------------------
Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 Out of 30
---------------------
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.