Both the reading and listening are about the extinction of Steller's sea cows that lived in Bering before 1768. The author believes that there are three possible theories for the extinction. The lecturer challenges the claims made by the author. He is of the opinion that none of these theories are correct.
To begin with, the author suggests that the indigenous Siberian people over hunted the Sea cows since they were very nutritious. Consequently the sea cows' population dramatically declined. The lecturer challenges this specific argument by asserting that these Sea Cows were massive creatures that were nine meters long and weigh around 10 tons. they were enormous that could feed a small Siberian village. In addition, he mentions that the Siberian population was very small and overhunting can not be the main reason for such extinction.
Secondly, the writer claims that the disturbance in the ecosystem negatively affected the kelp populations, which were the main food source for the cow seas. Thus, the extinction occurred due to food shortage. The lecturer, however, refutes this point by explaining that If severe ecological changes happened at that time near Bering island, it would affect all the marine life there. In other words, not only the kelp population would be declined but the other animals like whales. In addition, he mentions that there are no reports shown that any other creature has been affected due to ecological disturbances. Therefore, this theory is not correct and the sea cows had not experienced any food shortages.
- Large numbers of dinosaur fossils have been discovered in deposits on Alaska s North Slope a region that today experiences an extremely cold arctic climate One hundred million years ago when those dinosaurs were alive the environment of the North Slop 3
- Every year forest fires and severe storms cause a great deal of damage to forests in the northwestern United States One way of dealing with the aftermath of these disasters is called salvage logging which is the practice of removing dead trees from affect 76
- Endotherms are animals such as modern birds and mammals that keep their body temperatures constant For instance humans are endotherms and maintain an internal temperature of 37 C no matter whether the environment is warm or cold Because dinosaurs were
- Jane Austen 1775 1817 is one of the most famous of all English novelists and today her novels are more popular than ever with several recently adapted as Hollywood movies But we do not have many records of what she looked like For a long time the o 70
- summarize the points made in the lecture about elephants special abilities and behaviors being sure to explain how they cast doubt on specific points made in the reading about elephants surprising behaviors 80
Attribute Value Ideal
Final score: 21 in 30
Category: Satisfactory Excellent
No. of Grammatical Errors: 4 2
No. of Spelling Errors: 3 2
No. of Sentences: 14 12
No. of Words: 252 250
No. of Characters: 1278 1200
No. of Different Words: 145 150
Fourth Root of Number of Words: 3.984 4.2
Average Word Length: 5.071 4.6
Word Length SD: 2.538 2.4
No. of Words greater than 5 chars: 88 80
No. of Words greater than 6 chars: 67 60
No. of Words greater than 7 chars: 56 40
No. of Words greater than 8 chars: 29 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 18 21.0
Sentence Length SD: 7.801 7.5
Use of Discourse Markers (%): 0.643 0.12
Sentence-Text Coherence: 0.334 0.35
Sentence-Para Coherence: 0.5 0.50
Sentence-Sentence Coherence: 0.12 0.07
Number of Paragraphs: 3 4