The reading passage and listening are discussing two contradictory theories about declining of the population of sea otters in Alaskan coast. The reading passage says that the environmental pollution is the reason of the population decrease in sea otters. However, the lecturer casts doubt on reading passage by providing reasons that they show the predators are the reason of declining.
First of all, the reading passage says that the increasing chemicals in the water have decreased the amount of sea otters. However, the lecturer says that the predatory theory supports the decline of sea otters. As predators kill sea otters and eat them immediately, so there isn't any dead sea otters on the beach of Alaskan.
On the other hand, the reading passage claims that the other sea mammals such as seals and sea lines in the Alaskan coast also have decreased because of environmental pollution. However, the lecturer casts doubt on that view of reading passage by mentioning that the orcas are eating other mammals because of lack of whales in the Alaskan coast.
Finally, the reading passage says that uneven pattern shows that in the Alaskan coast the population of sea otters have decreased, while in other locations their population are stable. The lecturer believes that the uneven pattern supports predatory theory more than environmental pollution theory. He says that the orcas are large creatures that they don't have access to other shallow and rocky locations that the population of sea otters are stable, and they can access easily to Alaskan coast to kill and eat sea otters, and it is the reason of declining in population of sea otters.
Grammar and spelling errors:
Line 3, column 277, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: isn't
...ters and eat them immediately, so there isnt any dead sea otters on the beach of Ala...
^^^^
Line 7, column 353, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...the orcas are large creatures that they dont have access to other shallow and rocky ...
^^^^
Discourse Markers used:
['also', 'finally', 'first', 'however', 'so', 'while', 'such as', 'first of all', 'on the other hand']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.324232081911 0.261695866417 124% => OK
Verbs: 0.146757679181 0.158904122519 92% => OK
Adjectives: 0.0750853242321 0.0723426182421 104% => OK
Adverbs: 0.0307167235495 0.0435111971325 71% => OK
Pronouns: 0.0238907849829 0.0277247811725 86% => OK
Prepositions: 0.170648464164 0.128828473217 132% => OK
Participles: 0.0443686006826 0.0370669169778 120% => OK
Conjunctions: 2.57117276552 2.5805825403 100% => OK
Infinitives: 0.0102389078498 0.0208969081088 49% => Some infinitives wanted.
Particles: 0.0 0.00154638098197 0% => OK
Determiners: 0.116040955631 0.128158765124 91% => OK
Modal_auxiliary: 0.00341296928328 0.0158828679856 21% => OK
WH_determiners: 0.0 0.0114777025283 0% => OK
Vocabulary words and sentences:
No of characters: 1655.0 1645.83664459 101% => OK
No of words: 272.0 271.125827815 100% => OK
Chars per words: 6.08455882353 6.08160592843 100% => OK
Fourth root words length: 4.06108636974 4.04852973271 100% => OK
words length more than 5 chars: 0.382352941176 0.374372842146 102% => OK
words length more than 6 chars: 0.305147058824 0.287516216867 106% => OK
words length more than 7 chars: 0.172794117647 0.187439937562 92% => OK
words length more than 8 chars: 0.121323529412 0.113142543107 107% => OK
Word Length SD: 2.57117276552 2.5805825403 100% => OK
Unique words: 106.0 145.348785872 73% => More unique words wanted.
Unique words percentage: 0.389705882353 0.539623497131 72% => More unique words wanted or less content wanted.
Word variations: 36.0773843057 53.8517498576 67% => OK
How many sentences: 11.0 13.0529801325 84% => OK
Sentence length: 24.7272727273 21.7502111507 114% => OK
Sentence length SD: 52.3121590404 49.3711431718 106% => OK
Chars per sentence: 150.454545455 132.220823453 114% => OK
Words per sentence: 24.7272727273 21.7502111507 114% => OK
Discourse Markers: 0.818181818182 0.878197800319 93% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 3.39072847682 59% => OK
Readability: 55.2419786096 50.5018328374 109% => OK
Elegance: 2.67796610169 1.90840788429 140% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.679570582863 0.549887131256 124% => OK
Sentence sentence coherence: 0.249459495601 0.142949733639 175% => OK
Sentence sentence coherence SD: 0.094845762191 0.0787303798458 120% => OK
Sentence paragraph coherence: 0.754533539385 0.631733273073 119% => OK
Sentence paragraph coherence SD: 0.122797646625 0.139662658121 88% => OK
Sentence topic coherence: 0.44039830758 0.266732575781 165% => OK
Sentence topic coherence SD: 0.0932706977515 0.103435571967 90% => OK
Paragraph paragraph coherence: 0.579386135181 0.414875509568 140% => OK
Paragraph paragraph coherence SD: 0.0540133919293 0.0530846634433 102% => OK
Paragraph topic coherence: 0.570621188869 0.40443939384 141% => OK
Paragraph topic coherence SD: 0.0213289173228 0.0528353158467 40% => The ideas may be duplicated in paragraphs.
Task Achievement:
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 2.0 4.26048565121 47% => OK
Positive topic words: 4.0 3.49668874172 114% => OK
Negative topic words: 5.0 3.62251655629 138% => OK
Neutral topic words: 2.0 3.1766004415 63% => OK
Total topic words: 11.0 10.2958057395 107% => OK
What are sentences with positive/Negative/neutral sentiment?
---------------------
Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 Out of 30
---------------------
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.