Unlike the passage, which claims that the invasion of zebra mussel is unstoppable and provides three reasons, the lecture opposes this opinion and he says there are many ways to control zebra mussel's spread, unlike the past; 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 the idea mentioned in the article, which suggests that zebra mussel dominates because there are now predators, high rate of reproduction. He explains that this could be in the beginning, but in Europe new aquatic birds were attracted to zebra mussel and take it as a food source 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. He 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.
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Grammar and spelling errors:
Line 7, column 193, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
... 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 : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 32.0 22.412803532 143% => Less pronouns wanted
Preposition: 28.0 30.3222958057 92% => OK
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 1360.0 1373.03311258 99% => OK
No of words: 277.0 270.72406181 102% => OK
Chars per words: 4.90974729242 5.08290768461 97% => OK
Fourth root words length: 4.07962216107 4.04702891845 101% => OK
Word Length SD: 2.39848705717 2.5805825403 93% => OK
Unique words: 146.0 145.348785872 100% => OK
Unique words percentage: 0.527075812274 0.540411800872 98% => OK
syllable_count: 416.7 419.366225166 99% => 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: 7.0 8.23620309051 85% => 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: 39.0 21.2450331126 184% => The Avg. Sentence Length is relatively long.
Sentence length SD: 83.1227270673 49.2860985944 169% => OK
Chars per sentence: 194.285714286 110.228320801 176% => OK
Words per sentence: 39.5714285714 21.698381199 182% => 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 : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted.
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: 0.451307874597 0.272083759551 166% => OK
Sentence topic coherence: 0.218077701999 0.0996497079465 219% => Sentence topic similarity is high.
Sentence topic coherence SD: 0.06184333797 0.0662205650399 93% => OK
Paragraph topic coherence: 0.266616592833 0.162205337803 164% => OK
Paragraph topic coherence SD: 0.0525267531416 0.0443174109184 119% => OK
automated_readability_index: 21.5 13.3589403974 161% => OK
flesch_reading_ease: 40.35 53.8541721854 75% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 17.3 11.0289183223 157% => OK
coleman_liau_index: 11.79 12.2367328918 96% => OK
dale_chall_readability_score: 9.33 8.42419426049 111% => OK
difficult_words: 66.0 63.6247240618 104% => OK
linsear_write_formula: 27.0 10.7273730684 252% => Linsear_write_formula is high.
gunning_fog: 17.6 10.498013245 168% => OK
text_standard: 18.0 11.2008830022 161% => 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.