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.
The passage states that there is criticisem with tuna farming due to numerous issues and explains three of these problems. However, the professor explains that different solutions have been proposed for each concerns.
First, the article states that female tuna don't lay eggs in captivity; hence, the farmers catch young wild tuna which leads to a decline in tuna population. The professor refutes this point stating that scientists have made a new breakthrough for this issue. By injecting a hormone into female tunas' body female tuna can lay eggs. This hormone has been proven to pose no harm to the tuna and the consumers. Therefore, there is no need for concerns about tunas population declining anymore.
Second, the author claims that tuna feed has to be high-protein food derived from fishes. The professor argues against this notion explaining that even though the food needs to have high-protein it doesn't necessarily need to be fish. So plants that have high-protein content and are inexpensive can be used. Therefore, tuna farming can be done at a much lower costs.
Third, the reading posits that it is possible for tuna confined to ocean cages to become infested with parasites which will lead them to die even before they are sold. Still, the professor points states that a treatment has been discovered that greatly reduces the possibility of infestation. concurrently, there is evidence that shows the parasite needs resources from the shore to thrive therefore, to lessen the possibility of infestation the farms need to move further away from the shore and to deeper waters.
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Comments
Essay evaluations by e-grader
Grammar and spelling errors:
Line 2, column 44, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...st, the article states that female tuna dont lay eggs in captivity; hence, the farme...
^^^^
Line 3, column 198, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: doesn't
... the food needs to have high-protein it doesnt necessarily need to be fish. So plants ...
^^^^^^
Line 4, column 293, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Concurrently
...reduces the possibility of infestation. concurrently, there is evidence that shows the paras...
^^^^^^^^^^^^
Transition Words or Phrases used:
first, hence, however, if, second, so, still, therefore, third, as to
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 13.0 12.0772626932 108% => OK
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 30.0 30.3222958057 99% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1335.0 1373.03311258 97% => OK
No of words: 261.0 270.72406181 96% => OK
Chars per words: 5.11494252874 5.08290768461 101% => OK
Fourth root words length: 4.0193898071 4.04702891845 99% => OK
Word Length SD: 2.62597772592 2.5805825403 102% => OK
Unique words: 150.0 145.348785872 103% => OK
Unique words percentage: 0.574712643678 0.540411800872 106% => OK
syllable_count: 413.1 419.366225166 99% => 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: 9.0 8.23620309051 109% => 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: 14.0 13.0662251656 107% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 44.2423751069 49.2860985944 90% => OK
Chars per sentence: 95.3571428571 110.228320801 87% => OK
Words per sentence: 18.6428571429 21.698381199 86% => OK
Discourse Markers: 4.92857142857 7.06452816374 70% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => 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: 0.27791123039 0.272083759551 102% => OK
Sentence topic coherence: 0.0938950080807 0.0996497079465 94% => OK
Sentence topic coherence SD: 0.0414785826472 0.0662205650399 63% => OK
Paragraph topic coherence: 0.153538845435 0.162205337803 95% => OK
Paragraph topic coherence SD: 0.0376075871329 0.0443174109184 85% => OK
Essay readability:
automated_readability_index: 12.0 13.3589403974 90% => Automated_readability_index is low.
flesch_reading_ease: 53.21 53.8541721854 99% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 12.36 12.2367328918 101% => OK
dale_chall_readability_score: 8.46 8.42419426049 100% => OK
difficult_words: 65.0 63.6247240618 102% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 Out of 30
---------------------
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.
Grammar and spelling errors:
Line 2, column 44, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...st, the article states that female tuna dont lay eggs in captivity; hence, the farme...
^^^^
Line 3, column 198, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: doesn't
... the food needs to have high-protein it doesnt necessarily need to be fish. So plants ...
^^^^^^
Line 4, column 293, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Concurrently
...reduces the possibility of infestation. concurrently, there is evidence that shows the paras...
^^^^^^^^^^^^
Transition Words or Phrases used:
first, hence, however, if, second, so, still, therefore, third, as to
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 13.0 12.0772626932 108% => OK
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 30.0 30.3222958057 99% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1335.0 1373.03311258 97% => OK
No of words: 261.0 270.72406181 96% => OK
Chars per words: 5.11494252874 5.08290768461 101% => OK
Fourth root words length: 4.0193898071 4.04702891845 99% => OK
Word Length SD: 2.62597772592 2.5805825403 102% => OK
Unique words: 150.0 145.348785872 103% => OK
Unique words percentage: 0.574712643678 0.540411800872 106% => OK
syllable_count: 413.1 419.366225166 99% => 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: 9.0 8.23620309051 109% => 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: 14.0 13.0662251656 107% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 44.2423751069 49.2860985944 90% => OK
Chars per sentence: 95.3571428571 110.228320801 87% => OK
Words per sentence: 18.6428571429 21.698381199 86% => OK
Discourse Markers: 4.92857142857 7.06452816374 70% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => 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: 0.27791123039 0.272083759551 102% => OK
Sentence topic coherence: 0.0938950080807 0.0996497079465 94% => OK
Sentence topic coherence SD: 0.0414785826472 0.0662205650399 63% => OK
Paragraph topic coherence: 0.153538845435 0.162205337803 95% => OK
Paragraph topic coherence SD: 0.0376075871329 0.0443174109184 85% => OK
Essay readability:
automated_readability_index: 12.0 13.3589403974 90% => Automated_readability_index is low.
flesch_reading_ease: 53.21 53.8541721854 99% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 12.36 12.2367328918 101% => OK
dale_chall_readability_score: 8.46 8.42419426049 100% => OK
difficult_words: 65.0 63.6247240618 102% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 Out of 30
---------------------
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.