The sea otter is a small mammal that lives in waters along the western coast of North America from California to Alaska.
When some sea otter populations off the Alaskan coast started rapidly declining a few years ago, it caused much concern because sea otters play an important ecological role in the coastal ecosystem. Experts started investigating the cause of the decline and quickly realized that there were two possible explanations: environmental pollution or attacks by predators.
Initially, the pollution hypothesis seemed the more likely of the two.
The first reason why pollution seemed the more likely cause was that there were known sources of it along the Alaskan coast, such as oil rigs and other sources of industrial chemical pollution. Water samples from the area revealed increased levels of chemicals that could decrease the otters' resistance to life-threatening infections and thus could indirectly cause their deaths.
Second, other sea mammals such as seals and sea lions along the Alaskan coast were also declining, indicating that whatever had endangered the otters was affecting other sea mammals as well. This fact again pointed to environmental pollution, since it usually affects the entire ecosystem rather than a single species. Only widely occurring predators, such as the orca (a large predatory whale), could have the same effect, but orcas prefer to hunt much larger prey, such as other whales.
Third, scientists believed that the pollution hypothesis could also explain the uneven pattern of otter decline: at some Alaskan locations the otter populations declined greatly, while at others they remained stable. Some experts explained these observations by suggesting that ocean currents or other environmental factors may have created uneven concentrations of pollutants along the coast.
TPO 10
The reading and the lecture are both about sea otter decline. The author of the reading states that the sea otter reducing due to environmental pollution. Lecturer challenges the claim made by the author. She is of the opinion that these explanations are faulty.
To begin with, according to the reading passage it feels industrial chemical pollution is dangerous and the main cause of endangered the sea otter. However, lecturer believe that if pollution weakened sea Otter there is no evidence on Alaskan beaches therefore, when cleaning the shore. Predators immediately kill and can't wash up on sea coast.
Second, the reading says that other sea mammals also affecting and decline it’s all due to environmental pollution. Because orcas prefer to prey a large whales. Lecturer claim that, whales easily vanish from the area because of human hunters and orcas change their diet to smaller sea mammals. Accordingly, mention in the reading passage that other small sea mammals are also decline.
Finally, the reading claim that researcher believed that pollution’s speculators also describe the irregular pattern of otter decrease so, at some places they reduced tremendously and other they are present. Critics explain its all about irregular environmental pollution. Moreover, the lecturer believe on Orco predation theory. Orcas are large animal how large they cannot live at shallow rocky location and shallow rocky sites precisely location have not decline. Where the Orcas lived there are declined the Otter.
Grammar and spelling errors:
Line 5, column 319, Rule ID: CANT[1]
Message: Did you mean 'can't' or 'cannot'?
Suggestion: can't; cannot
...e shore. Predators immediately kill and cant wash up on sea coast. Second, the rea...
^^^^
Line 7, column 122, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Because” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...s;s all due to environmental pollution. Because orcas prefer to prey a large whales. Le...
^^^^^^^
Line 7, column 382, Rule ID: BEEN_PART_AGREEMENT[2]
Message: Consider using a past participle here: 'declined'.
Suggestion: declined
...e that other small sea mammals are also decline. Finally, the reading claim that res...
^^^^^^^
Line 9, column 230, Rule ID: IT_IS[6]
Message: Did you mean 'it's' (='it is') instead of 'its' (possessive pronoun)?
Suggestion: it's; it is
...other they are present. Critics explain its all about irregular environmental pollu...
^^^
Line 9, column 464, Rule ID: HAVE_PART_AGREEMENT[2]
Message: Possible agreement error -- use past participle here: 'declined'.
Suggestion: declined
...rocky sites precisely location have not decline. Where the Orcas lived there are declin...
^^^^^^^
Line 9, column 473, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Where” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...es precisely location have not decline. Where the Orcas lived there are declined the ...
^^^^^
Transition Words or Phrases used:
accordingly, also, finally, however, if, moreover, second, so, therefore, to begin with
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 1.0 5.04856512141 20% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 17.0 22.412803532 76% => OK
Preposition: 23.0 30.3222958057 76% => OK
Nominalization: 11.0 5.01324503311 219% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1304.0 1373.03311258 95% => OK
No of words: 240.0 270.72406181 89% => More content wanted.
Chars per words: 5.43333333333 5.08290768461 107% => OK
Fourth root words length: 3.93597934253 4.04702891845 97% => OK
Word Length SD: 2.67550293818 2.5805825403 104% => OK
Unique words: 139.0 145.348785872 96% => OK
Unique words percentage: 0.579166666667 0.540411800872 107% => OK
syllable_count: 413.1 419.366225166 99% => OK
avg_syllables_per_word: 1.7 1.55342163355 109% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 5.0 8.23620309051 61% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 15.0 21.2450331126 71% => The Avg. Sentence Length is relatively short.
Sentence length SD: 46.5009660518 49.2860985944 94% => OK
Chars per sentence: 81.5 110.228320801 74% => OK
Words per sentence: 15.0 21.698381199 69% => OK
Discourse Markers: 5.4375 7.06452816374 77% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 6.0 4.19205298013 143% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 9.0 4.27373068433 211% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.251489152647 0.272083759551 92% => OK
Sentence topic coherence: 0.0852501943036 0.0996497079465 86% => OK
Sentence topic coherence SD: 0.0661772392377 0.0662205650399 100% => OK
Paragraph topic coherence: 0.160264824747 0.162205337803 99% => OK
Paragraph topic coherence SD: 0.0639634994065 0.0443174109184 144% => OK
Essay readability:
automated_readability_index: 11.6 13.3589403974 87% => Automated_readability_index is low.
flesch_reading_ease: 47.79 53.8541721854 89% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 13.62 12.2367328918 111% => OK
dale_chall_readability_score: 9.31 8.42419426049 111% => OK
difficult_words: 75.0 63.6247240618 118% => OK
linsear_write_formula: 6.5 10.7273730684 61% => OK
gunning_fog: 8.0 10.498013245 76% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
---------------------
Rates: 88.3333333333 out of 100
Scores by essay e-grader: 26.5 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.