The passage and lecture both discuss a kind of shellfish, which is dubbed zebra mussel, and its impact in North America. The reading claims that the invasion of this creature cannot be stopped and it would be a prominent dangerous. In contrast, the professor explains that there are some effective ways to control zebra’s spread nowadays.
Firstly, the text indicates the past experience of spreading the zebra mussel by ships is a significant evidence to confirm that possibly this invasion is without cease. The professor refutes this and says that now there are an effective ways to stop ships to transport mussels to the new location. For instance, the ships should be required to empty out the fresh water and use ocean water as ballast when they are in the oceans. This salt water can kill all of the mussels.
Secondly, the passage puts out when the mussels reach to a new area they have a great chance to dominate it. However, the speaker mentions that mussels can dominate the new environment only at the beginning. According to the professor, in the Europe, local birds found mussels as new food and switch to eat them. The birds eat a lot of mussels, and hence they not dominate new habitat anymore.
Thirdly, the reading points the zebra mussel’s competition for food in the new environment can cause a reduction in the other fish population. The lecture denies this and talks that it is true that mussels have some negative impacts on the fish that eat planktons. But they also have positive benefits for other fish. For example, the mussels produce the nutrients that are eaten by fish that feed near the bottom of the river.
- TPO-20 - Independent Writing Task Do you agree or disagree with the following statement? Successful people try new things and take risks rather than only doing what they know how to do well. Use specific reasons and examples to support your answer. 67
- TPO-15 - Independent Writing Task Do you agree or disagree with the following statement? In order to become financially responsible adults, children should learn to manage their own money at young age. Use specific reasons and examples to support your ans 85
- TPO-43 - Independent Writing Task Imagine that you are in a classroom or a meeting. The teacher or the meeting leader says something incorrect In your opinion, which of the following is the best thing to do?-Interrupt and correct the mistake right away-Wa 90
- TPO-19 - Independent Writing Task Do you agree or disagree with the following statement? In order to be well-informed, a person must get information from many different news resources. Use specific reasons and examples to support your answer. 69
- TPO-28 - Independent Writing Task Do you agree or disagree with the following statement? Parents today are more involved in their children’s education than were parents in the past.Use specific reasons and examples to support your answer. 84
it would be a prominent dangerous
it would be a prominent danger
Attribute Value Ideal
Final score: 26 in 30
Category: Very Good Excellent
No. of Grammatical Errors: 1 2
No. of Spelling Errors: 0 2
No. of Sentences: 15 12
No. of Words: 284 250
No. of Characters: 1326 1200
No. of Different Words: 149 150
Fourth Root of Number of Words: 4.105 4.2
Average Word Length: 4.669 4.6
Word Length SD: 2.319 2.4
No. of Words greater than 5 chars: 89 80
No. of Words greater than 6 chars: 74 60
No. of Words greater than 7 chars: 42 40
No. of Words greater than 8 chars: 22 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 18.933 21.0
Sentence Length SD: 5.105 7.5
Use of Discourse Markers (%): 0.733 0.12
Sentence-Text Coherence: 0.328 0.35
Sentence-Para Coherence: 0.553 0.50
Sentence-Sentence Coherence: 0.086 0.07
Number of Paragraphs: 4 4