Wild tuna, a species of large ocean fish, have decreased in number because of overfishing. Recently, attempts have been made to farm tuna by feeding the fish in ocean cages until they become large enough for sale. However, tuna farming has faced several problems and criticisms.
First, female tuna do not lay eggs in captivity, so tuna farmers must capture large quantities of young wild tuna to stock their farms, further reducing wild tuna populations. These young tuna are caged and fed until they are large enough to be sold. Since the captured females in tuna farms cannot lay eggs to replace the tuna that are sold, tuna farmers continue to catch young wild tuna to keep their farms going and so worsen the decline in wild tuna populations.
Second, tuna raised on farms are very expensive because they depend on a costly, high-protein food derived from other fish. Tuna feed almost exclusively on small fish, which supply them with the proteins and nutrients they require. A single tuna can grow more than four meters long, weigh close to 700 kilograms, and eat 70 kilograms of food a day! It is unlikely that tuna farms can remain profitable while supplying so much expensive food for the tuna.
Third tuna confined to ocean cages are likely to become infested with parasites, organisms that feed on and weaken the animal they attach to. Tuna farmers off the coast of southern Australia have had problems with infestations of blood flukes, a type of parasite that lives within the blood vessels and heart of infected fish. Parasite infestations weaken tuna, slow their growth, and can even cause death, usually by making them susceptible to other diseases. Tuna farms in southern Australia have had 10 percent of their tuna die before they could be sold.
Recently there has a debate on whether tuna farming is a good way to utilize in the ocean by the cages or not. More specifically, in regard to the passage, the author proposes three difficulties in the passage against the application of tuna farming. However, the speaker holds the arguments questionable with each point made in the reading text.
First and foremost, the author of the reading states that female tuna is not capable to lay eggs in the ocean cage. Therefore, the workers must catch the wild tuna, this behavior decreases the population of wild tuna in the environment. In the listening, however, the professor argues that the workers can inject hormone into the female tuna and cultivate them to lay eggs in an efficient way. As a result, the solution will not hurt the number of wild tuna and the buyer’s health.
Second, the passage points out that the budget spends on buying high-protein foods is extremely high. This is because the foods are abstracted from other fish to provide for tuna farming. On the other hand, the expert suggests that the protein can get from specific plants which will not be so costly compare with fish products. Thus, the payment of tuna foods at farming can be capped low.
Finally, the author brings his skeptical opinion by suggesting that the ocean cages infect certain parasites in the fish body. For example, in southern Australia, the infestation of blood flukes damaged the fish in several ways. Nevertheless, the lecturer takes issues with this claim by contending that the new treatment can be applied to the blood fluke problems. To be specific, the farmers can move the ocean cages from offshore to the deeper water where decreases the possibility of blood flukes live. That is to say, they cannot live in the deep water without the composition from the nearshore to sustain their life cycle.
To sum up, all the points mentioned in the reading passage are not convincible according to the speaker.
Grammar and spelling errors:
Line 3, column 374, Rule ID: IN_A_X_MANNER[1]
Message: Consider replacing "in an efficient way" with adverb for "efficient"; eg, "in a hasty manner" with "hastily".
...ale tuna and cultivate them to lay eggs in an efficient way. As a result, the solution will not hur...
^^^^^^^^^^^^^^^^^^^
Line 9, column 106, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...t convincible according to the speaker.
^^^
Transition Words or Phrases used:
finally, first, however, if, nevertheless, second, so, therefore, thus, for example, as a result, in regard to, to sum up, on the other hand, that is to say
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 14.0 22.412803532 62% => OK
Preposition: 50.0 30.3222958057 165% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1641.0 1373.03311258 120% => OK
No of words: 334.0 270.72406181 123% => OK
Chars per words: 4.91317365269 5.08290768461 97% => OK
Fourth root words length: 4.27500489853 4.04702891845 106% => OK
Word Length SD: 2.53028733046 2.5805825403 98% => OK
Unique words: 181.0 145.348785872 125% => OK
Unique words percentage: 0.541916167665 0.540411800872 100% => OK
syllable_count: 495.9 419.366225166 118% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 13.0 8.23620309051 158% => OK
Subordination: 1.0 1.25165562914 80% => OK
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: 17.0 13.0662251656 130% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 23.7136901461 49.2860985944 48% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 96.5294117647 110.228320801 88% => OK
Words per sentence: 19.6470588235 21.698381199 91% => OK
Discourse Markers: 9.17647058824 7.06452816374 130% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => 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: 0.273915256666 0.272083759551 101% => OK
Sentence topic coherence: 0.0870490609074 0.0996497079465 87% => OK
Sentence topic coherence SD: 0.071385956203 0.0662205650399 108% => OK
Paragraph topic coherence: 0.128136606618 0.162205337803 79% => OK
Paragraph topic coherence SD: 0.0740483211106 0.0443174109184 167% => OK
Essay readability:
automated_readability_index: 11.5 13.3589403974 86% => Automated_readability_index is low.
flesch_reading_ease: 60.65 53.8541721854 113% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.5 11.0289183223 86% => OK
coleman_liau_index: 11.2 12.2367328918 92% => OK
dale_chall_readability_score: 8.55 8.42419426049 101% => OK
difficult_words: 84.0 63.6247240618 132% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
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Write the essay in 20 minutes.
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.