The article states pollution is the main reason for the decline in sea otter population, whereas the lecture suggests that predation is the major factor.
The article and lecture consider the problem of a decline in sea otter population along the western coast of North America, but from different points of view. According to the reading passage, pollution is the main reason for the effect, whereas the lecture suggests that predation is the major factor.
First of all, the lecture argues that environmental pollution is not the cause of the decline in the number of sea otters. No dead sea otter bodies in the sea means that sea otters may have been eaten by predators. This fact buttresses the predation hypothesis as when the animal is attacked by a predator, it is eaten immediately, without leaving the dead body. This point differs from one in the article, whereby increased levels of chemicals in the area from oil rigs could decrease the otters’ resistance to life-threatening diseases.
Furthermore, the disappearance of otters can be attributed to the change in eating habits of the other predator, the orcas. Provided orcas have been mainly hunting whales whose number has declined because of human actions, they had to change their food source to smaller mammals, such as sea otters. However, the author of the reading passage contends that populations of other species, such as seals and sea lions, who dwell in the area, have also been declining. Because the pollution affects the entire ecosystem, rather than one single species, such fact supports the environmental theory.
Finally, the lecturer puts forth the idea that the stability in the number of species in certain areas can be explained by their inaccessibility to orcas. Orcas are quite large and cannot get into shallow and rocky places; such environments are exactly the areas where the populations of sea otters remained on the same level. This fact counters the point made in the reading passage, according to which uneven pattern of otter decline is explained by environmental reasons. Ocean currents or other ecological factors have created different concentrations of pollutants along the coast.
Summing up, the lecturer challenges the idea that the decline in the number of otters is influenced by environmental factors by arguing that this phenomenon should mostly be attributed to predation.
- Some people believe that using animals to test the safety of human medicines is cruel and unwarranted whereas others feel it is a medical necessity Discuss both views and state your own opinion 78
- The pie charts below give information about the composition of household rubbish in the United Kingdom in two different years 78
- Some people believe that studying at university or college is the best route to a successful career while others believe that it is better to get a job straight after shcool Discuss both views 67
- It is more important to keep your old friends than it is to make new friends Do you agree or disagree 60
- The chart shows market shares of five industrial spheres in the national budget in 2005 and 2015 along with the predictions by 2025 78
Transition Words or Phrases used:
also, but, finally, first, furthermore, however, if, may, so, well, whereas, such as, first of all
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 15.0 10.4613686534 143% => OK
Auxiliary verbs: 6.0 5.04856512141 119% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 15.0 22.412803532 67% => OK
Preposition: 51.0 30.3222958057 168% => OK
Nominalization: 9.0 5.01324503311 180% => OK
Performance on vocabulary words:
No of characters: 1876.0 1373.03311258 137% => OK
No of words: 360.0 270.72406181 133% => OK
Chars per words: 5.21111111111 5.08290768461 103% => OK
Fourth root words length: 4.35587717469 4.04702891845 108% => OK
Word Length SD: 2.78618727048 2.5805825403 108% => OK
Unique words: 190.0 145.348785872 131% => OK
Unique words percentage: 0.527777777778 0.540411800872 98% => OK
syllable_count: 584.1 419.366225166 139% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 24.0 21.2450331126 113% => OK
Sentence length SD: 27.4820345357 49.2860985944 56% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 125.066666667 110.228320801 113% => OK
Words per sentence: 24.0 21.698381199 111% => OK
Discourse Markers: 6.53333333333 7.06452816374 92% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.364329172148 0.272083759551 134% => OK
Sentence topic coherence: 0.117079991252 0.0996497079465 117% => OK
Sentence topic coherence SD: 0.119187036807 0.0662205650399 180% => OK
Paragraph topic coherence: 0.224502405067 0.162205337803 138% => OK
Paragraph topic coherence SD: 0.17080416982 0.0443174109184 385% => More connections among paragraphs wanted.
Essay readability:
automated_readability_index: 15.1 13.3589403974 113% => OK
flesch_reading_ease: 47.12 53.8541721854 87% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.7 11.0289183223 115% => OK
coleman_liau_index: 13.23 12.2367328918 108% => OK
dale_chall_readability_score: 9.21 8.42419426049 109% => OK
difficult_words: 100.0 63.6247240618 157% => OK
linsear_write_formula: 11.0 10.7273730684 103% => 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: 83.3333333333 out of 100
Scores by essay e-grader: 25.0 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.