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-30 - Independent Writing Task Do you agree or disagree with the following statement? It is more enjoyable to have a job where you work only three days a week for long hours than to have a job where you work five days a week for shorter hours. Use spec 70
- TPO-18 - Independent Writing Task Do you agree or disagree with the following statement? Students are more influenced by their teachers than by their friends. Use specific reasons and examples to support your answer. 83
- Some parent offer their school age children money for each high grade mark they get in school Do you think this is a good idea Use specific reasons and examples to support your answer 93
- TPO-33 - Independent Writing Task Do you agree or disagree with the following statement?When teachers assign projects on which students must work together, the students learn much more effectively than when they are asked to work alone on projects.Use spe 73
- TPO-24 - Integrated Writing Task Animal fossils usually provide very little opportunity to study the actual animal tissues, because in fossils the animals' living tissues have been largely replaced by minerals. Thus, scientists were very excited recently 86
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