The reading and the lecture are both about the invasion of a freshwater shellfish named zebra mussels to North America. While the author of the reading argues that their invasion cannot be stopped and cause a serious threat and damage to freshwater fish in North America, the professor disputes this claim. He states that the zebra mussel population can be controlled and should not be considered a severe threat. The lecturer casts doubt on the point made in the reading by providing three controversial reasons.
In the reading, the writer begins by saying that the zebra mussel invasion in the past indicates that their attack could be unstoppable. In the past, the mussels were carried by the ballast water of ships traveling from Europe to North America. However, the professor disagrees with this idea. He asserts that this phenomenon happened in the past because people did not have enough knowledge about controlling the population of zebra mussels. Also, there are some effective ways to prevent zebra mussel's from being transported by ships. The ships can empty their ballast water in the ocean instead of freshwater of North America; as a result, salt water kills them, and they do not get the chance to enter fresh water.
Furthermore, according to the reading passage, zebra mussels usually become a dominant species in a new environment since they do not have any predators. On the other hand, the professor points out that this is true that at the beginning, they have no predators, but sooner or later, local birds will change their eating habits and prey on them. Because the birds can eat many of them, their population will be controlled.
Finally, the author believes that because mussels eat plankton, they may pose a decline in the total fish population in the new habitats. Not surprisingly, the professor refutes this assertion by contending that mussels generate a nutrient that is the main food of the bottom sea fish. Therefore, mussels have a positive impact on the population of deepsea fish; however, they may have a negative effect on the population of plankton eater fish, but the overall population of fish will increase.
To sum up, both the author and the lecturer hold conflicting views on whether introducing zebra mussels to North American freshwater can be considered a serious threat or not.
- Which of the following is the most effective way for parents to get children aged 3 6 ready for the start of the school Providing appropriate books for children to learn how to read Reading books aloud for children Improving children s communication skill 73
- Some people believe that society should try to save every plant and animal species despite the expense to humans in effort time and financial well being Others believe that society need not make extraordinary efforts especially at a great cost in money an 66
- Transient lunar phenomena TLP are relatively brief flashes of light that appear to come from the surface of the Moon Such flashes of light have been observed for centuries by both amateur and professional astronomers and several theories have been put for 73
- Claim No act is done purely for the benefit of others Reason All actions even those that seem to be done for other people are based on self interest 50
- The following appeared in a memorandum written by the vice president of Health Naturally a small but expanding chain of stores selling health food and other health related products Our previous experience has been that our stores are most profitable in ar 66
Transition Words or Phrases used:
also, but, finally, furthermore, however, may, so, therefore, while, as a result, to sum up, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => OK
Auxiliary verbs: 12.0 5.04856512141 238% => Less auxiliary verb wanted.
Conjunction : 11.0 7.30242825607 151% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 30.0 22.412803532 134% => Less pronouns wanted
Preposition: 52.0 30.3222958057 171% => OK
Nominalization: 9.0 5.01324503311 180% => OK
Performance on vocabulary words:
No of characters: 1956.0 1373.03311258 142% => OK
No of words: 388.0 270.72406181 143% => Less content wanted.
Chars per words: 5.0412371134 5.08290768461 99% => OK
Fourth root words length: 4.43821085614 4.04702891845 110% => OK
Word Length SD: 2.60352655363 2.5805825403 101% => OK
Unique words: 194.0 145.348785872 133% => OK
Unique words percentage: 0.5 0.540411800872 93% => More unique words wanted or less content wanted.
syllable_count: 596.7 419.366225166 142% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 3.25607064018 184% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 3.0 1.51434878587 198% => OK
Preposition: 5.0 2.5761589404 194% => OK
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 22.0 21.2450331126 104% => OK
Sentence length SD: 43.0778646424 49.2860985944 87% => OK
Chars per sentence: 115.058823529 110.228320801 104% => OK
Words per sentence: 22.8235294118 21.698381199 105% => OK
Discourse Markers: 6.47058823529 7.06452816374 92% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => OK
Sentences with neutral sentiment: 6.0 4.27373068433 140% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.237507549291 0.272083759551 87% => OK
Sentence topic coherence: 0.0862382047361 0.0996497079465 87% => OK
Sentence topic coherence SD: 0.0642084731082 0.0662205650399 97% => OK
Paragraph topic coherence: 0.133473996777 0.162205337803 82% => OK
Paragraph topic coherence SD: 0.0725625460318 0.0443174109184 164% => OK
Essay readability:
automated_readability_index: 13.7 13.3589403974 103% => OK
flesch_reading_ease: 57.61 53.8541721854 107% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 12.25 12.2367328918 100% => OK
dale_chall_readability_score: 8.47 8.42419426049 101% => OK
difficult_words: 92.0 63.6247240618 145% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 10.8 10.498013245 103% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
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Write the essay in 20 minutes.
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.