A huge marine mammal known as Steller’s sea cow once lived in the waters around Bering Island off the coast of Siberia. It was described in 1741 by Georg W. Steller, a naturalist who was among the first Europeans to see one. In 1768 the animal became exti

Submitted by samah ae on Wed, 08/12/2015 - 22:30

In these set of material, the reading mentions some theories for the extinction of Steller’s sea cow which is a huge marine mammal lived in the water around Bering island of the coast of Siberia. And the author provides three reasons of support. However, the professor opposes the author’s claim, he refutes each of the author’s reasons.

First, the passage asserts that sea cow population would have over-hunted by groups of native Siberian people. Because it was a massive animals and a good source of food in such a harsh environment. On the other hand, the professor refutes this theory...

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Integrated TOEFL Writing

Attribute Value Ideal
Score: 27 in 30
Category: Excellent Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 17 12
No. of Words: 288 250
No. of Characters: 1383 1200
No. of Different Words: 158 150
Fourth Root of Number of Words: 4.12 4.2
Average Word Length: 4.802 4.6
Word Length SD: 2.523 2.4
No. of Words greater than 5 chars: 107 80
No. of Words greater than 6 chars: 72 60
No. of Words greater than 7 chars: 43 40
No. of Words greater than 8 chars: 29 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 16.941 21.0
Sentence Length SD: 8.802 7.5
Use of Discourse Markers (%): 0.529 0.12
Sentence-Text Coherence: 0.307 0.35
Sentence-Para Coherence: 0.507 0.50
Sentence-Sentence Coherence: 0.094 0.07
Number of Paragraphs: 4 4