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 been a ton of debate as to concerns about tuna farming. More specifically, regarding the passage, the writer puts forth the idea that tuna farming faces many obstacles. In the listening, the lecturer quickly points out some serious flaws in the writer's claims. The professor believes that there are promising solutions to tuna farming's problems. First and foremost, the author of the reading states that tuna females cannot lay eggs in the cages, so the farmers should always capture young tunas causing a decline in the population. However, some professionals in the same field stand in firm opposition to this claim. In the listening, for example, the professor states that injecting females with hormones can solve this problem. He adds that hormone helps a female tuna to reproduce in captivity. One group of scholars, represented by the writer, thinks that tuna on the farms usually feed on highly protein-small fish. The reading adds this problem makes tuna farms less profitable business. Of course, though, not all experts in the field believe this is accurate. Again the speaker addresses explicitly this point when he states that tuna in the farms can get protein from plants. He states that plants are inexpensive food that can supply tuna with protein. Finally, the author wraps his argument by posting that tuna on the farms can be easily infected with parasites. Not surprisingly, the lecturer argues with this claim by contending that steps can be taken to protect tuna from infections and parasites by moving the farms deeper into the sea.
To sum up, both the writer and professor hold conflicting views about tuna farms. They will have trouble finding common ground on this issue.
Grammar and spelling errors:
Line 1, column 316, Rule ID: PROGRESSIVE_VERBS[1]
Message: This verb is normally not used in the progressive form. Try a simple form instead.
...aims. The professor believes that there are promising solutions to tuna farmings problems. Fi...
^^^^^^^^^^^^^
Transition Words or Phrases used:
finally, first, however, if, regarding, so, as to, for example, of course, to sum up
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 10.4613686534 57% => More to be verbs wanted.
Auxiliary verbs: 8.0 5.04856512141 158% => OK
Conjunction : 3.0 7.30242825607 41% => More conjunction wanted.
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 23.0 22.412803532 103% => OK
Preposition: 40.0 30.3222958057 132% => OK
Nominalization: 3.0 5.01324503311 60% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1441.0 1373.03311258 105% => OK
No of words: 283.0 270.72406181 105% => OK
Chars per words: 5.09187279152 5.08290768461 100% => OK
Fourth root words length: 4.10153676581 4.04702891845 101% => OK
Word Length SD: 2.52939368455 2.5805825403 98% => OK
Unique words: 170.0 145.348785872 117% => OK
Unique words percentage: 0.600706713781 0.540411800872 111% => OK
syllable_count: 431.1 419.366225166 103% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 5.0 2.5761589404 194% => OK
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 16.0 21.2450331126 75% => The Avg. Sentence Length is relatively short.
Sentence length SD: 35.1374956224 49.2860985944 71% => OK
Chars per sentence: 84.7647058824 110.228320801 77% => OK
Words per sentence: 16.6470588235 21.698381199 77% => OK
Discourse Markers: 4.94117647059 7.06452816374 70% => OK
Paragraphs: 2.0 4.09492273731 49% => More paragraphs wanted.
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.251115484635 0.272083759551 92% => OK
Sentence topic coherence: 0.0861155495734 0.0996497079465 86% => OK
Sentence topic coherence SD: 0.0526034897499 0.0662205650399 79% => OK
Paragraph topic coherence: 0.170907372947 0.162205337803 105% => OK
Paragraph topic coherence SD: 0.0646037243366 0.0443174109184 146% => OK
Essay readability:
automated_readability_index: 10.9 13.3589403974 82% => Automated_readability_index is low.
flesch_reading_ease: 63.7 53.8541721854 118% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.4 11.0289183223 76% => OK
coleman_liau_index: 11.95 12.2367328918 98% => OK
dale_chall_readability_score: 8.67 8.42419426049 103% => OK
difficult_words: 76.0 63.6247240618 119% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 8.4 10.498013245 80% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Minimum four paragraphs wanted. The correct pattern:
para 1: introduction
para 2: doubt 1
para 3: doubt 2
para 4: doubt 3
Less contents wanted from the reading passages(25%), more content wanted from the lecture (75%).
Don't need a conclusion paragraph.
Read sample essays from ETS:
http://www.testbig.com/users/toeflwritingmaster
Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 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.