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.
What the reading passage and the lecture both debate on is whether tuna farming is facing problems that cannot be solved. While the reading passage mentions three issues and criticisms tuna farming has right now, the lecture, however, provides solutions for all of them.
Firstly, the lecture points out that the reduce of wild tuna populations due to unavailability of captivated tuna to reproduce, which is mentioned in the passage, is no longer a problem since a scientific method is evolved. The lecture demonstrates that one type of hormones that stimulate female tuna in captivity to lay eggs can be injected to tuna, thus making sure the population of the stock, eventually avoiding too much young wild tuna to be captivated. It also suggested that this method would not cause any health harms to both tuna and consumers, making it a safe, practical treatment to maintain tuna farms without overly catching wild tuna.
Secondly, while the passage mentions that tuna farming requires high costs to feed tuna with a specific type of fish, the lecture states that farmers can lower the cost by feeding them with food made up of the high-protein plants. These plants are, according to the lecture, consisted of abundant amounts of nutrients tuna needs but do not cost as much as small fishes do. Therefore, tuna farmers are no longer bothered by the high price to afford food for tunas.
Finally, the lecture claims that the health problem of tuna caused by parasites mentioned in the passage is solvable. The passage shows that infestations of a parasite called blood flukes had damaged tuna, whereas the lecture points out that blood flukes cannot maintain their life cycles if they were in the offshore. This suggests that if tuna cages were put away from the coast, no tuna would be damaged.
- tpo 66 Summarize the points made in the lecture being sure to explain how they cast doubt on the specific methods proposed in the reading passage 70
- 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 problem 80
- summarize the points made in the lecture being sure to explain how they cast doubt on specific points made in the reading passage 73
- Is it as important for older people to learn and study new things as young people to do so 90
- In many places students must arrive very early in the morning to attend school Some people believe that starting the school day early is the best approach to support learning but others believe that starting the school day at a later time in the morning w 71
Grammar and spelling errors:
Line 3, column 39, Rule ID: A_INFINITVE[1]
Message: Probably a wrong construction: a/the + infinitive
... Firstly, the lecture points out that the reduce of wild tuna populations due to unavail...
^^^^^^^^^^
Transition Words or Phrases used:
also, but, finally, first, firstly, however, if, second, secondly, so, therefore, thus, whereas, while
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 14.0 10.4613686534 134% => OK
Auxiliary verbs: 6.0 5.04856512141 119% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 2.0 5.01324503311 40% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1507.0 1373.03311258 110% => OK
No of words: 303.0 270.72406181 112% => OK
Chars per words: 4.97359735974 5.08290768461 98% => OK
Fourth root words length: 4.17215713816 4.04702891845 103% => OK
Word Length SD: 2.48586939873 2.5805825403 96% => OK
Unique words: 170.0 145.348785872 117% => OK
Unique words percentage: 0.561056105611 0.540411800872 104% => OK
syllable_count: 469.8 419.366225166 112% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 6.0 8.23620309051 73% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 27.0 21.2450331126 127% => The Avg. Sentence Length is relatively long.
Sentence length SD: 53.1790986096 49.2860985944 108% => OK
Chars per sentence: 137.0 110.228320801 124% => OK
Words per sentence: 27.5454545455 21.698381199 127% => OK
Discourse Markers: 9.27272727273 7.06452816374 131% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 9.0 4.45695364238 202% => Less negative sentences wanted.
Sentences with neutral sentiment: 1.0 4.27373068433 23% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.285836008045 0.272083759551 105% => OK
Sentence topic coherence: 0.123439114956 0.0996497079465 124% => OK
Sentence topic coherence SD: 0.0372632579489 0.0662205650399 56% => OK
Paragraph topic coherence: 0.180224785066 0.162205337803 111% => OK
Paragraph topic coherence SD: 0.0274927163907 0.0443174109184 62% => OK
Essay readability:
automated_readability_index: 15.8 13.3589403974 118% => OK
flesch_reading_ease: 44.07 53.8541721854 82% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 13.8 11.0289183223 125% => OK
coleman_liau_index: 11.84 12.2367328918 97% => OK
dale_chall_readability_score: 9.14 8.42419426049 108% => OK
difficult_words: 80.0 63.6247240618 126% => OK
linsear_write_formula: 14.0 10.7273730684 131% => OK
gunning_fog: 12.8 10.498013245 122% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
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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.