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 attacks 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 other environmental factor, might have created uneven concentrations of pollutants along the coast.
The article introduces the topic of sea otters level decline on the Alaskan coast. More specifically, the writer discusses that the cause of this decline is environmental pollution and predator attack. The lecturer in the passage disagrees. He believes that predation is the only on cause of the decline of sea otters and attack each of the claims made in the reading.
In the passage, the author begins by stating that pollution is one cause of the decline and gives reason for this there are sources on the Alaskan coast such as oil rigs. The lecturer, however, disagrees, he states that there is a lack of dead sea otters washing up from Alaskan beaches which because of infection cause of their deaths. He goes on to say that If a predator kills an otter it ate away and clean.
The author also claims that there is also a decline in the other sea mammals that indicates that which affect with an otter also affect with other mammals. Again the lecturer believes that there are some flaws in the writer's argument. He holds that orcas hunt whales but whales are disappeared because of human hunters so, orcas could change their diet and started eating what they have available because of this reason also decline in the other mammals could occur.
To sum up, both writer and professor have conflicting views about the cause of sea otters level decline. So, it's clear that they will have trouble finding common ground on this issue.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2023-02-13 | zaid | 73 | view |
| 2022-12-06 | Naveena0 | 73 | view |
| 2022-12-06 | Vincent Samuel | 80 | view |
| 2022-12-06 | Naveena0 | 71 | view |
| 2022-11-16 | rpinisetti8 | 80 | view |
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Grammar and spelling errors:
Line 1, column 281, Rule ID: THE_ONLY_ON[1]
Message: Did you mean 'one'?
Suggestion: one
... He believes that predation is the only on cause of the decline of sea otters and ...
^^
Line 3, column 194, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...such as oil rigs. The lecturer, however, disagrees, he states that there is a lac...
^^
Line 5, column 104, Rule ID: AFFECT_EFFECT[1]
Message: Did you mean 'effect'?
Suggestion: effect
...r sea mammals that indicates that which affect with an otter also affect with other mammals...
^^^^^^^^^^^
Line 5, column 130, Rule ID: AFFECT_EFFECT[1]
Message: Did you mean 'effect'?
Suggestion: effect
...es that which affect with an otter also affect with other mammals. Again the lecturer belie...
^^^^^^^^^^^
Line 5, column 218, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'writers'' or 'writer's'?
Suggestion: writers'; writer's
...lieves that there are some flaws in the writers argument. He holds that orcas hunt whal...
^^^^^^^
Transition Words or Phrases used:
also, but, however, if, so, such as, to sum up
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 8.0 10.4613686534 76% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 13.0 12.0772626932 108% => OK
Pronoun: 25.0 22.412803532 112% => OK
Preposition: 32.0 30.3222958057 106% => OK
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 1193.0 1373.03311258 87% => OK
No of words: 251.0 270.72406181 93% => More content wanted.
Chars per words: 4.75298804781 5.08290768461 94% => OK
Fourth root words length: 3.98032404683 4.04702891845 98% => OK
Word Length SD: 2.27070663741 2.5805825403 88% => OK
Unique words: 129.0 145.348785872 89% => More unique words wanted.
Unique words percentage: 0.513944223108 0.540411800872 95% => OK
syllable_count: 372.6 419.366225166 89% => 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: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 51.8434475663 49.2860985944 105% => OK
Chars per sentence: 99.4166666667 110.228320801 90% => OK
Words per sentence: 20.9166666667 21.698381199 96% => OK
Discourse Markers: 3.83333333333 7.06452816374 54% => More transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 5.0 4.19205298013 119% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 8.0 4.45695364238 179% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.230552251213 0.272083759551 85% => OK
Sentence topic coherence: 0.0865660753061 0.0996497079465 87% => OK
Sentence topic coherence SD: 0.0763949675429 0.0662205650399 115% => OK
Paragraph topic coherence: 0.139017637155 0.162205337803 86% => OK
Paragraph topic coherence SD: 0.0495986137583 0.0443174109184 112% => OK
Essay readability:
automated_readability_index: 11.4 13.3589403974 85% => Automated_readability_index is low.
flesch_reading_ease: 59.64 53.8541721854 111% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.9 11.0289183223 90% => OK
coleman_liau_index: 10.27 12.2367328918 84% => OK
dale_chall_readability_score: 7.96 8.42419426049 94% => OK
difficult_words: 53.0 63.6247240618 83% => More difficult words wanted.
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
---------------------
Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 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.