reason of declining in the number of sea otters

Essay topics:

reason of declining in the number of sea otters

The passage and the lecture both discuss the reason of quickly declining in the number of Sea otters that has a significant effect on region's costal ecosystem. Both explain two dominated explanation about decrease in population of this animal, environmental pollution and predators. The passage claim that the pollution explain this event more convincingly in comparison to attack by predators and give three reason for this. Even though, the lecture denies all those reason and states that the reason of attacking by predators is more conceivable.
First, according to passage, existence of industrial chemical materials like oil rigs along the Alaskan cost, is an important evidence for declining of this kind of animal by pollution of industrial factories. In contrast, the lecture denies this assertion by stating that there were not any dead Sea otters along this coast, so it is not possible pollution caused death of this animal. By considering that some predators attack them, declining in population of this animal without any evidences of their dead bodies can be explained more conceivable.
Second, the reading points out that pollution explanation is more likely true because of death some other mammals like Seals and Sea lions. It can be explained by universally pollution effects on the entire ecosystem. But, the lecture state that orcas changed their diet from whale to small mammals because of decreasing the numbers of whale causing by human hunter. So, they ate small mammals like Seals and Sea lions besides Sea otters in order to survive.
Third, the reading says that irregular pattern of declining them could happen by environmental factors like ocean currents. By contrast, the lecture contends that this uneven pattern can be justified better by large size of orcas. In fact, they weren’t able to pass thorough shallow water and rocky place because of their large size. As the shallow water and rocky place are the location with stable population of sea otters, considering attacking by predator as the reason of decrease in the number of sea otter is more reasonable and conceivable.

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Essay Categories
Integrated TOEFL Writing

Comments

Transition Words or Phrases used:
besides, but, first, if, second, so, third, in contrast, in fact, kind of

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 : 9.0 7.30242825607 123% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 28.0 22.412803532 125% => Less pronouns wanted
Preposition: 60.0 30.3222958057 198% => 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: 1783.0 1373.03311258 130% => OK
No of words: 341.0 270.72406181 126% => OK
Chars per words: 5.22873900293 5.08290768461 103% => OK
Fourth root words length: 4.29722995808 4.04702891845 106% => OK
Word Length SD: 2.67739526477 2.5805825403 104% => OK
Unique words: 171.0 145.348785872 118% => OK
Unique words percentage: 0.50146627566 0.540411800872 93% => More unique words wanted or less content wanted.
syllable_count: 560.7 419.366225166 134% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 6.0 2.5761589404 233% => Less preposition wanted as sentence beginnings.

Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 22.0 21.2450331126 104% => OK
Sentence length SD: 38.3761500009 49.2860985944 78% => OK
Chars per sentence: 118.866666667 110.228320801 108% => OK
Words per sentence: 22.7333333333 21.698381199 105% => OK
Discourse Markers: 4.86666666667 7.06452816374 69% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => 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: 0.311045788902 0.272083759551 114% => OK
Sentence topic coherence: 0.107187668879 0.0996497079465 108% => OK
Sentence topic coherence SD: 0.134135992631 0.0662205650399 203% => The coherence between sentences is low.
Paragraph topic coherence: 0.199551873765 0.162205337803 123% => OK
Paragraph topic coherence SD: 0.0719898561079 0.0443174109184 162% => OK

Essay readability:
automated_readability_index: 14.6 13.3589403974 109% => OK
flesch_reading_ease: 49.15 53.8541721854 91% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.9 11.0289183223 108% => OK
coleman_liau_index: 13.35 12.2367328918 109% => OK
dale_chall_readability_score: 8.11 8.42419426049 96% => OK
difficult_words: 73.0 63.6247240618 115% => OK
linsear_write_formula: 12.0 10.7273730684 112% => OK
gunning_fog: 10.8 10.498013245 103% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?

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Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 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.