In this set of materials, the author of the reading claims that the zebra mussels, a native shellfish in Europe, are harmful to North America's natural sea creatures and provides three important supports. However, the lecturer suggests that there are several ways to control its invasion.
According to the passage, the spread of the zebra mussel is unstoppable because it is carried on ships' ballast water, which is used for keeping the cargo in balance. The professor, on the other hand, states that in the past, sailors did not know how the zebra mussel spread across the ocean. He claims that it is now possible to stop their spread by emptying the water in the ocean and refill the tanks.
The article also contends that they dominate the new habitat since they are able to endure hard conditions and have a high rate of reproduction. The speaker, on the contrary, points out that local aquatic birds switched their diets for an unknown reason and now, eat the zebra mussels. Thus, these birds will probably keep their population under control.
Lastly, the reading states that they will probably trigger a declination on the overall fish population. The professor, however, points out that they may have a negative impact on some species population but may have a positive effect on others. For example, they provide some species nutrients and help them increase their population although cause some plankton-eating fishes' population to decrease.
Transition Words or Phrases used:
also, but, however, lastly, may, so, thus, for example, on the contrary, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 10.4613686534 67% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 28.0 30.3222958057 92% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1221.0 1373.03311258 89% => OK
No of words: 240.0 270.72406181 89% => More content wanted.
Chars per words: 5.0875 5.08290768461 100% => OK
Fourth root words length: 3.93597934253 4.04702891845 97% => OK
Word Length SD: 2.52377239135 2.5805825403 98% => OK
Unique words: 145.0 145.348785872 100% => OK
Unique words percentage: 0.604166666667 0.540411800872 112% => OK
syllable_count: 367.2 419.366225166 88% => 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: 9.0 8.23620309051 109% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
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: 21.0 21.2450331126 99% => OK
Sentence length SD: 36.5366339423 49.2860985944 74% => OK
Chars per sentence: 111.0 110.228320801 101% => OK
Words per sentence: 21.8181818182 21.698381199 101% => OK
Discourse Markers: 8.18181818182 7.06452816374 116% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => 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: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.379421711832 0.272083759551 139% => OK
Sentence topic coherence: 0.117101730978 0.0996497079465 118% => OK
Sentence topic coherence SD: 0.057245143281 0.0662205650399 86% => OK
Paragraph topic coherence: 0.187712995302 0.162205337803 116% => OK
Paragraph topic coherence SD: 0.0575092679597 0.0443174109184 130% => OK
Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
flesch_reading_ease: 58.62 53.8541721854 109% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 12.24 12.2367328918 100% => OK
dale_chall_readability_score: 9.22 8.42419426049 109% => OK
difficult_words: 69.0 63.6247240618 108% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 10.4 10.498013245 99% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
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Rates: 86.6666666667 out of 100
Scores by essay e-grader: 26.0 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.