tpo 10 the decline of sea otters along Alaska coast
The material discusses the two causes that could explain why sea otter started to decline on the Alaskan coast. While the reading suggests that pollution is the main reason for this decline, the listening challenges this and mentions that predation is the most possible cause of sea otter's decline.
First, the author states that pollution had known sources along the Alaskan coast from industrial chemical pollution, so it reduced the otter's ability to resist infection and cause their death. On the other hand, the professor opposes this and points out that pollution theory is weakened given that there were not dead sea otters. The lecturer adds that if the life-threating infection is the main reason of sea otter's death, we supposed to see many dead sea otters. According to the lecture, the absence of dead sea otters is consistent with the predation hypothesis, because predators already ate them, so they cannot wash up on the shore.
Second, the writer states that other sea mammals, such as seals and sea lion were also declining in the same place, given that the environmental pollution affects many species, and orcas are the main predator in this area usually hunt whales. On the contrary, the professor refutes this and cites that ocars usually eat whales, but whales started to disappear because of human hunting. The lecturer explains that orcas had to change their diet, so they started to hunt other mammals, such as seals, sea lions, and sea otters, and this approach explains their declining.
Third, the reading brings up that sea otter's decline happened in uneven pattern which supports the pollution theory because the pollution concentration is not equal along the coast. Conversely, the lecturer contradicts this and contends that uneven pattern of sea otter's declining supports the predation hypothesis rather than pollution. The professor statets that the decline happened according to the accessibility of orcas to the area. The speaker adds that ocars are very large, so they cannot access shallow water and rocky areas. the speaker mentions that these areas are precisely where sea otters are not declining.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2019-12-20 | Christine hanna | 73 | view |
| 2019-09-22 | birkiy | 76 | view |
| 2019-08-31 | zhrnrz-1992 | 80 | view |
| 2019-08-05 | Christine hanna | 73 | view |
| 2019-04-02 | toefltaker | 85 | view |
Grammar and spelling errors:
Line 3, column 137, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'otters'' or 'otter's'?
Suggestion: otters'; otter's
...l chemical pollution, so it reduced the otters ability to resist infection and cause t...
^^^^^^
Line 3, column 414, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'otters'' or 'otter's'?
Suggestion: otters'; otter's
...ing infection is the main reason of sea otters death, we supposed to see many dead sea...
^^^^^^
Line 7, column 537, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: The
...t access shallow water and rocky areas. the speaker mentions that these areas are p...
^^^
Line 7, column 625, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ely where sea otters are not declining.
^^
Transition Words or Phrases used:
also, but, conversely, first, if, second, so, third, while, as to, such as, on the contrary, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 11.0 7.30242825607 151% => OK
Relative clauses : 18.0 12.0772626932 149% => OK
Pronoun: 33.0 22.412803532 147% => Less pronouns wanted
Preposition: 29.0 30.3222958057 96% => 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: 1798.0 1373.03311258 131% => OK
No of words: 347.0 270.72406181 128% => OK
Chars per words: 5.18155619597 5.08290768461 102% => OK
Fourth root words length: 4.31600926901 4.04702891845 107% => OK
Word Length SD: 2.45864735298 2.5805825403 95% => OK
Unique words: 169.0 145.348785872 116% => OK
Unique words percentage: 0.487031700288 0.540411800872 90% => More unique words wanted or less content wanted.
syllable_count: 540.0 419.366225166 129% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 14.0 8.23620309051 170% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 4.0 1.51434878587 264% => Less conjunction wanted as sentence beginning.
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 24.0 21.2450331126 113% => OK
Sentence length SD: 42.7529686283 49.2860985944 87% => OK
Chars per sentence: 128.428571429 110.228320801 117% => OK
Words per sentence: 24.7857142857 21.698381199 114% => OK
Discourse Markers: 7.85714285714 7.06452816374 111% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
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: 0.476022552538 0.272083759551 175% => OK
Sentence topic coherence: 0.1732489508 0.0996497079465 174% => OK
Sentence topic coherence SD: 0.100004679825 0.0662205650399 151% => OK
Paragraph topic coherence: 0.304108337437 0.162205337803 187% => OK
Paragraph topic coherence SD: 0.0268394476766 0.0443174109184 61% => OK
Essay readability:
automated_readability_index: 15.4 13.3589403974 115% => OK
flesch_reading_ease: 47.12 53.8541721854 87% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 12.7 11.0289183223 115% => OK
coleman_liau_index: 13.06 12.2367328918 107% => OK
dale_chall_readability_score: 8.65 8.42419426049 103% => OK
difficult_words: 84.0 63.6247240618 132% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 11.6 10.498013245 110% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
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Write the essay in 20 minutes.
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.