Populations of the yellow cedar, a species of tree that is common in northwestern North America, have been steadily declining for more than a century now, since about 1880. Scientists have advanced several hypotheses explain this decline. One hypothesis i

The reading states that the population of the yellow cedar is declining and provides three hypotheses to explain the reason. However, the professor explains that the researchers still do not know what kill these trees and he thinks that the reasons that the reading are mentioned are not adequate and he refutes each of the author's hypotheses.

First, the article claims that the insect parasites, especially the cedar bark beetle is attacked the trees by eating the wood. The professor refutes this point by saying that even healthy trees are more resistant to this kind of insects. He states that the bark and leaves of these trees have some kinds of chemicals that are poisonous to these insects and this substance kills them. Thus, these beetles are not the cause for death of these trees.

Second, the reading avers the bears that eat the tree bark which contain a high sugar content for them attributes the decline. However, the professor says that even though the bears damage some trees, but these trees exist in both island and mainlands and the bears are not living in islands. According to professor as these trees are declining in both places, thus bears cannot be the reason for their drop.

Third, the article posits that the gradual changes in climate may to be to blame as the timing of the root growth is changes and the sensitive roots suffer from partial freezing. The professor opposes this point by saying that the author forgot to account one important thing. Based on the lecture if the author is true, the trees in high elevation would die as the weather is colder and they are in danger of becoming frozen, but they found that trees in low elevation are dying more. Thus, the climate changes cannot be responsible for declining in number of these trees.

Votes
Average: 7.6 (1 vote)
Essay Categories

Discourse Markers used:
['but', 'first', 'however', 'if', 'may', 'second', 'so', 'still', 'third', 'thus', 'kind of']

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance in Part of Speech:
Nouns: 0.250746268657 0.261695866417 96% => OK
Verbs: 0.179104477612 0.158904122519 113% => OK
Adjectives: 0.0477611940299 0.0723426182421 66% => OK
Adverbs: 0.0507462686567 0.0435111971325 117% => OK
Pronouns: 0.0238805970149 0.0277247811725 86% => OK
Prepositions: 0.125373134328 0.128828473217 97% => OK
Participles: 0.0388059701493 0.0370669169778 105% => OK
Conjunctions: 2.21796738524 2.5805825403 86% => OK
Infinitives: 0.0208955223881 0.0208969081088 100% => OK
Particles: 0.0 0.00154638098197 0% => OK
Determiners: 0.164179104478 0.128158765124 128% => OK
Modal_auxiliary: 0.0119402985075 0.0158828679856 75% => OK
WH_determiners: 0.0119402985075 0.0114777025283 104% => OK

Vocabulary words and sentences:
No of characters: 1784.0 1645.83664459 108% => OK
No of words: 308.0 271.125827815 114% => OK
Chars per words: 5.79220779221 6.08160592843 95% => OK
Fourth root words length: 4.18926351222 4.04852973271 103% => OK
words length more than 5 chars: 0.331168831169 0.374372842146 88% => OK
words length more than 6 chars: 0.220779220779 0.287516216867 77% => OK
words length more than 7 chars: 0.123376623377 0.187439937562 66% => OK
words length more than 8 chars: 0.0909090909091 0.113142543107 80% => OK
Word Length SD: 2.21796738524 2.5805825403 86% => OK
Unique words: 154.0 145.348785872 106% => OK
Unique words percentage: 0.5 0.539623497131 93% => More unique words wanted or less content wanted.
Word variations: 50.1800464428 53.8517498576 93% => OK
How many sentences: 13.0 13.0529801325 100% => OK
Sentence length: 23.6923076923 21.7502111507 109% => OK
Sentence length SD: 44.1022212271 49.3711431718 89% => OK
Chars per sentence: 137.230769231 132.220823453 104% => OK
Words per sentence: 23.6923076923 21.7502111507 109% => OK
Discourse Markers: 0.846153846154 0.878197800319 96% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 3.39072847682 0% => OK
Readability: 45.7702297702 50.5018328374 91% => OK
Elegance: 1.63529411765 1.90840788429 86% => OK

Coherence and Cohesion:
Essay topic to essay body coherence: 0.244954529055 0.549887131256 45% => OK
Sentence sentence coherence: 0.172305402338 0.142949733639 121% => OK
Sentence sentence coherence SD: 0.0660186965835 0.0787303798458 84% => OK
Sentence paragraph coherence: 0.662546892102 0.631733273073 105% => OK
Sentence paragraph coherence SD: 0.121263355293 0.139662658121 87% => OK
Sentence topic coherence: 0.131864250163 0.266732575781 49% => OK
Sentence topic coherence SD: 0.0418944967479 0.103435571967 41% => OK
Paragraph paragraph coherence: 0.527175163603 0.414875509568 127% => OK
Paragraph paragraph coherence SD: 0.0445633168112 0.0530846634433 84% => OK
Paragraph topic coherence: 0.186362860344 0.40443939384 46% => OK
Paragraph topic coherence SD: 0.0301156659802 0.0528353158467 57% => The ideas may be duplicated in paragraphs.

Task Achievement:
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 8.0 4.45695364238 179% => OK
Sentences with neutral sentiment: 2.0 4.26048565121 47% => OK
Positive topic words: 3.0 3.49668874172 86% => OK
Negative topic words: 6.0 3.62251655629 166% => OK
Neutral topic words: 2.0 3.1766004415 63% => OK
Total topic words: 11.0 10.2958057395 107% => OK
What are sentences with positive/Negative/neutral sentiment?

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Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 Out of 30
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Note: This is not the final score. 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.