Unlike the passage, which claims that the invasion of zebra mussel is unstoppable and it represents serious threat to fish water population by provides three reasons of support, the lecture opposes this opinion when speaker says thst there are many ways to control zebra mussel's spread, unlike the past because there was not enough knowledge, it should not represent series threat
First of all, the writer suggests that zebra mussel could attach easily to the bottom of any ship crossing Europe's waterway towards to North America. The speaker says that is true if the ship empty out the water when it reaches North America, but it the ships are required to empty out this water and refill again from the ocean water while it out, the salt water of the ocean will kill the zebra mussel.
Secondly, the professor refuses this reason mentioned in the article, which suggests that zebra mussel dominates because there are no predators and it has high rate of reproduction. The lecturer explains that this could be in the beginning, but in Europe new aquatic birds were attracted to zebra mussel and take it as a source of food for them by switching from whatever they eat to zebra mussel. He puts forth the idea that birds can eat a lot of zebra mussel, and by this way it creates natural predators, and unlikely to be dominant.
Thirdly, the professor explains that it might be true that zebra mussel eat plankton, which has negative impact on fish population because it represents source of food for fish population, but He mentions that it has positive effect too. The professor elaborates on this by mentioning that zebra mussel generates nutrients that feed bottom fish population, therefore, the bottom fish population will increase, even if the plankton eaten fish decreased.
- TOEFL T P O 11 Integrated Writing Task 68
- TPO-27 - Integrated Writing Task The little ice age was a period of unusually cold temperature in many parts of the world that lasted from about the year 1350 until 1900CE. There were unusually harsh winters, and glaciers grew larger in many areas. Scient 73
- TPO-29 - Integrated Writing Task Large numbers of dinosaur fossils have been discovered in deposits on Alaska's North Slope, a region that today experiences an extremely cold,arctic climate. One hundred million years ago, when those dinosaurs were alive, 80
- TOEFL T P O 12 Integrated Writing Task 60
- TPO-26 - Integrated Writing Task The zebra mussel, a freshwater shellfish native to Eastern Europe, has long been spreading out from its original habitats and has now reached parts of North America. There are reasons to believe that this invasion cannot b 65
Grammar and spelling errors:
Line 7, column 193, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... source of food for fish population, but He mentions that it has positive effect ...
^^
Transition Words or Phrases used:
but, first, if, second, secondly, so, therefore, third, thirdly, while, first of all
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 16.0 12.0772626932 132% => OK
Pronoun: 32.0 22.412803532 143% => Less pronouns wanted
Preposition: 32.0 30.3222958057 106% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1490.0 1373.03311258 109% => OK
No of words: 301.0 270.72406181 111% => OK
Chars per words: 4.95016611296 5.08290768461 97% => OK
Fourth root words length: 4.16525528304 4.04702891845 103% => OK
Word Length SD: 2.41686074912 2.5805825403 94% => OK
Unique words: 155.0 145.348785872 107% => OK
Unique words percentage: 0.514950166113 0.540411800872 95% => OK
syllable_count: 454.5 419.366225166 108% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 5.0 1.51434878587 330% => Less conjunction wanted as sentence beginning.
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 7.0 13.0662251656 54% => 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: 43.0 21.2450331126 202% => The Avg. Sentence Length is relatively long.
Sentence length SD: 119.385159574 49.2860985944 242% => The lengths of sentences changed so frequently.
Chars per sentence: 212.857142857 110.228320801 193% => OK
Words per sentence: 43.0 21.698381199 198% => OK
Discourse Markers: 12.0 7.06452816374 170% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 0.0 4.27373068433 0% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.461858562741 0.272083759551 170% => OK
Sentence topic coherence: 0.223657576675 0.0996497079465 224% => Sentence topic similarity is high.
Sentence topic coherence SD: 0.0617114288248 0.0662205650399 93% => OK
Paragraph topic coherence: 0.2752279097 0.162205337803 170% => OK
Paragraph topic coherence SD: 0.0553580744736 0.0443174109184 125% => OK
Essay readability:
automated_readability_index: 23.4 13.3589403974 175% => OK
flesch_reading_ease: 36.29 53.8541721854 67% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 18.9 11.0289183223 171% => OK
coleman_liau_index: 12.32 12.2367328918 101% => OK
dale_chall_readability_score: 9.49 8.42419426049 113% => OK
difficult_words: 71.0 63.6247240618 112% => OK
linsear_write_formula: 27.0 10.7273730684 252% => Linsear_write_formula is high.
gunning_fog: 19.2 10.498013245 183% => OK
text_standard: 19.0 11.2008830022 170% => OK
What are above readability scores?
---------------------
Rates: 65.0 out of 100
Scores by essay e-grader: 19.5 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.