Sea otters are a small mammal that lives in the waters along North America's west coast from California to Alaska. A few years ago some of the sea otter populations off of the Alaskan coast started to decline rapidly and raised several concerns because of their important role in the coastal ecosystem. Experts began investigating and came up with two possible explanations. One explanation was environmental pollution and the second was attacked by predators. At first, it seemed as if the pollution was the most likely cause for the population decline. One reason pollution was more likely was because of the known pollution sources along the Alaskan coast such as oil rigs. Also, water samples taken in the area showed increased levels of chemicals that could decrease the otters' immune systems and indirectly result in their deaths. Another thing that pointed to pollution as the culprit was the decline of other sea mammals such as seals in the same areas. This indicated that whatever was affecting the otters was also affecting the other sea mammals. Environmental pollution usually affects an entire ecosystem instead of just one species. Only predators that occurred in a large area, such as orcas (a large predatory whale), could cause the same effect, but they usually hunt larger prey. Finally, scientists believed the pollution hypothesis would also explain the uneven pattern of otter decline. In some Alaskan locations, the otter population declined greatly while other populations remained stable. Some experts suggested this could be explained by ocean currents, or another environmental factor might have created uneven concentrations of pollutants along the coast.
The article attempts to discuss the rising concern over decline of sea otter populations off the Alaskan coast. The article provides a few hypothesis of this cause by trying to put forward an explanation for each of them. The speaker, however, with even deeper analysis, challenges some of the claims of the article.
To start with, the text suggests that environmental pollution must have been the most probable explanation to the ensuing problem. To bolster the claim, it mentions instances of known pollutants along the coast, citing the example of oil rigs. Increased levels of chemicals were also suspected to have contributed to this phenomenon. The speaker supports this by saying that lately, a lot of dead sea otters have been washed off the shore.
Second, the text suggests that orcas, that usually prey on larger animals, in the form of only existing predator, is found in the area of concern. The speakers cultures differentiating opinion in this regard and states that due to the decline in the population of larger preys in the recent past, orcas might have started relying more on larger amounts of sea otters for their food.
Lastly, the text, drawing beliefs of scientists, hypothesizes that a possible effect of pollution could be an uneven patter of decline of the otters' population. The speaker, in this regard, challenges the claim and states that the cause-effect relationship could be a direct outcome of the predatory activity of the orcas. To support this claim, he emphasizes on the fact that the population decline has been negligible in shallow rocky areas where orcas were unable to access.
The interesting discussion that arose from the text and the claims made by the speaker suggest a conflict of opinions. Yet, the several hypothesis generated have been helpful in having a clear understanding of the situation.
Grammar and spelling errors:
Line 1, column 136, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun hypothesis seems to be countable; consider using: 'few hypotheses', 'few hypothesises'.
Suggestion: few hypotheses; few hypothesises
...e Alaskan coast. The article provides a few hypothesis of this cause by trying to put forward ...
^^^^^^^^^^^^^^
Line 1, column 223, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...orward an explanation for each of them. The speaker, however, with even deeper anal...
^^^
Line 1, column 283, Rule ID: SOME_OF_THE[1]
Message: Simply use 'some'.
Suggestion: some
..., with even deeper analysis, challenges some of the claims of the article. To start with...
^^^^^^^^^^^
Line 5, column 161, Rule ID: AGREEMENT_SENT_START[1]
Message: You should probably use 'culture'.
Suggestion: culture
...nd in the area of concern. The speakers cultures differentiating opinion in this regard ...
^^^^^^^^
Line 7, column 143, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'otters'' or 'otter's'?
Suggestion: otters'; otter's
...d be an uneven patter of decline of the otters population. The speaker, in this regard...
^^^^^^
Line 9, column 129, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun hypothesis seems to be countable; consider using: 'several hypotheses', 'several hypothesises'.
Suggestion: several hypotheses; several hypothesises
...uggest a conflict of opinions. Yet, the several hypothesis generated have been helpful in having a...
^^^^^^^^^^^^^^^^^^
Transition Words or Phrases used:
also, but, however, if, lastly, second, so, to start with
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 3.0 7.30242825607 41% => More conjunction wanted.
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 19.0 22.412803532 85% => OK
Preposition: 53.0 30.3222958057 175% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1555.0 1373.03311258 113% => OK
No of words: 304.0 270.72406181 112% => OK
Chars per words: 5.11513157895 5.08290768461 101% => OK
Fourth root words length: 4.17559525986 4.04702891845 103% => OK
Word Length SD: 2.73850017778 2.5805825403 106% => OK
Unique words: 171.0 145.348785872 118% => OK
Unique words percentage: 0.5625 0.540411800872 104% => OK
syllable_count: 473.4 419.366225166 113% => 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: 12.0 8.23620309051 146% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
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: 14.0 13.0662251656 107% => OK
Sentence length: 21.0 21.2450331126 99% => OK
Sentence length SD: 37.0416891447 49.2860985944 75% => OK
Chars per sentence: 111.071428571 110.228320801 101% => OK
Words per sentence: 21.7142857143 21.698381199 100% => OK
Discourse Markers: 4.07142857143 7.06452816374 58% => More transition words/phrases wanted.
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 6.0 4.19205298013 143% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
Sentences with neutral sentiment: 6.0 4.27373068433 140% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.186715369377 0.272083759551 69% => OK
Sentence topic coherence: 0.0658296105063 0.0996497079465 66% => OK
Sentence topic coherence SD: 0.0866974780628 0.0662205650399 131% => OK
Paragraph topic coherence: 0.104133266599 0.162205337803 64% => OK
Paragraph topic coherence SD: 0.0621223561078 0.0443174109184 140% => OK
Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
flesch_reading_ease: 50.16 53.8541721854 93% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.5 11.0289183223 104% => OK
coleman_liau_index: 12.42 12.2367328918 101% => OK
dale_chall_readability_score: 9.25 8.42419426049 110% => OK
difficult_words: 88.0 63.6247240618 138% => OK
linsear_write_formula: 8.5 10.7273730684 79% => OK
gunning_fog: 10.4 10.498013245 99% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 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.