Easter Island, also known as Rapa Nui, is the most isolated inhabited island in the world. Not only is it famous for its 887 stone statues, called Moai , but also for the numerous mysteries yet to be solved. One of them is what truly caused the extinction of the Rapa Nui civilization. There are a few competing theories as to why the Rapa Nui civilization disappeared in the first place.
One of the most famous claims is that Rapa Nui’s obsession with Moai caused the destruction of the island’s subtropical forest, leading to a famine that killed most of the population. According to some researchers, natives used to cut trees to have more space to transport the huge stone statues, the Moai, from one place to another. Over time, they ran out of trees to cut. This deforestation washed away fertile soils and changed the ecosystem drastically.
Some other historians believe that rats, not humans, were the cause of the fall of the Rapa Nui civilization. Thousands of rat bones have been found on the islands, suggesting that a huge population of rats could have actually caused an imbalance in the ecosystem. There are some estimates that suggest there were over three million rats living on the island at one time. By eating the seeds of the island’s tree, these rats could have also been the cause of deforestation which eventually led the Rapa Nui to die out or migrate off the island.
There are reasons to believe that the Rapa Nui extinction was caused by the arrival of Europeans in the 18th century. When the Peruvian Slave trade began in the 1860s, over two thousand Rapa Nui inhabitants were captured and transported to Peru. Diseases like syphilis and smallpox brought by Europeans could have infected a few of these people and caused the deaths of the remaining Rapa Nui people when they later returned.
Recently, there has been a ton of debate as to the disappearance of Rapa Nui civilization. More specifically, in regards to the passages, the writer puts forth the idea that there are three theories supporting the extinction of Easter Island. In the listening passage, the lecturer is quick to point out there are some serious flaws in the writer's claims. In fact, the professor believes theories remain as theories and addresses, in detail, the trouble with each point made in the reading text.
First and foremost, the author of the reading states that because Rapa Nui's obsessed with Maoi, famine had resulted in the disappearance of population. Some professionals in the same field, however, stand in firm opposition to this claim. In the listening, for example, the professor states that the abundance of seafood and water would have sustained the population. He goes on to say that as the skilled farmers used agricultural tools, they would have known the adverse effects of deforestation before trees were cut down.
One group of scholars, represented by the writer, think that huge population of rats destroyed the civilization. Of course, though, not all experts in this field believe this is accurate. Again, the speaker specifically addresses this point when he states that although settlers had brought rats in their boats, rats only destroyed a piece of island and not the entire civilization.
Finally, the author wraps his argument by positing that Europeans' entry in the 18th century had declined the population. Not surprisingly, the lecture takes issue with this claim by contending that even though diseases took out some of the lives of population, Europeans never had the chance to come back to transmit diseases in the Easter's Island.
To sum up, both the writer and professor hold conflicting views about disappearance of Rapa Nui civilization. It's clear that they will have trouble finding common ground on this issue.
Grammar and spelling errors:
Line 1, column 111, Rule ID: IN_REGARD_TO[1]
Message: Use simply 'regarding' or 'with regard to'.
Suggestion: regarding; with regard to
...pa Nui civilization. More specifically, in regards to the passages, the writer puts forth the...
^^^^^^^^^^^^^
Line 2, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...h each point made in the reading text. First and foremost, the author of the re...
^^^^^^
Line 2, column 399, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...he population. He goes on to say that as the skilled farmers used agricultural to...
^^
Line 3, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...restation before trees were cut down. One group of scholars, represented by th...
^^^^^^^^^
Line 3, column 300, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...tates that although settlers had brought rats in their boats, rats only destroyed...
^^
Line 4, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...sland and not the entire civilization. Finally, the author wraps his argument b...
^^^^^^^^
Line 4, column 236, Rule ID: SOME_OF_THE[1]
Message: Simply use 'some'.
Suggestion: some
...ding that even though diseases took out some of the lives of population, Europeans never ha...
^^^^^^^^^^^
Line 5, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...nsmit diseases in the Easters Island. To sum up, both the writer and professor...
^^^^^^^^^^
Transition Words or Phrases used:
finally, first, however, if, so, as to, for example, in fact, of course, to sum up
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 10.4613686534 57% => More to be verbs wanted.
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 22.0 22.412803532 98% => OK
Preposition: 50.0 30.3222958057 165% => OK
Nominalization: 17.0 5.01324503311 339% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1633.0 1373.03311258 119% => OK
No of words: 316.0 270.72406181 117% => OK
Chars per words: 5.16772151899 5.08290768461 102% => OK
Fourth root words length: 4.21620550194 4.04702891845 104% => OK
Word Length SD: 2.82235018224 2.5805825403 109% => OK
Unique words: 181.0 145.348785872 125% => OK
Unique words percentage: 0.572784810127 0.540411800872 106% => OK
syllable_count: 491.4 419.366225166 117% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 7.0 2.5761589404 272% => Less preposition wanted as sentence beginnings.
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 21.0 21.2450331126 99% => OK
Sentence length SD: 41.9075172254 49.2860985944 85% => OK
Chars per sentence: 108.866666667 110.228320801 99% => OK
Words per sentence: 21.0666666667 21.698381199 97% => OK
Discourse Markers: 5.46666666667 7.06452816374 77% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 8.0 4.19205298013 191% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 9.0 4.45695364238 202% => Less negative sentences wanted.
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0983469979203 0.272083759551 36% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0309737256148 0.0996497079465 31% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0277694117406 0.0662205650399 42% => Sentences are similar to each other.
Paragraph topic coherence: 0.0511361064055 0.162205337803 32% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0105985064806 0.0443174109184 24% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
flesch_reading_ease: 50.16 53.8541721854 93% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.5 11.0289183223 104% => OK
coleman_liau_index: 12.71 12.2367328918 104% => OK
dale_chall_readability_score: 8.38 8.42419426049 99% => OK
difficult_words: 74.0 63.6247240618 116% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 10.4 10.498013245 99% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
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It is not exactly right on the topic in the view of e-grader. Maybe there is a wrong essay topic.
Rates: 3.33333333333 out of 100
Scores by essay e-grader: 1.0 Out of 30
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Note: 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.