Humans arrived in the Kaliko Islands about 7,000 years ago, and within 3,000 years most of the large mammal species that had lived in the forests of the Kaliko Islands had become extinct. Yet humans cannot have been a factor in the species' extinctions, b

The author in his claim states that the mammals of Kaliko Islands become extinct because of climate or other environmental factors and humans had no role in their extinction. Though the argument seems plausible it is based on many false assumptions.

The author assumes that since no site have yet been discovered with large mammal bones humans can have not hunted them. Just because no such sites are yet found, it does not mean that humans did not hunt them. This observation could have other possible explanation. First there is a possibility that such a site could be found in the future. Second, since bones of large mammals are very strong, it could have been used by the humans in making ornaments, weapons and even their houses rather than discarding them after killing the mammals. There is also less clarity about the statement that bones of large mammals were not found, it could mean that bones of smaller mammals were found, which would suggest humans have hunted them. If the author had provided details about the materials that were used by the inhabitants of Kaliko islands and improved the clarity of statement as to whether small mammal bones were found or not the argument would have been stronger.

Let us assume that the humans did not hunt the mammals. Then also humans could be responsible for their extinction. The author says that there is no evidence showing humans had any significant contact with the mammals. If there is no contact with humans as author points out, then also humans could have been responsible for their extinction. The humans on reaching the island might have cut down the forest for agriculture. This could lead to the loss of habitat for the mammals. The humans might have established their settlements near rivers, which could have obstructed the mammals use of water. So, in some way humans were making the life difficult for the mammals by destroying their habitat, restricting them access to water. All these could have led to their extinction. So, humans might be responsible.

If climate change indeed was the cause for extinction, why was the human population not affected by these changes. If there was a climate change human population would also have been affected.

Since the argument of author is based on many mistaken assumptions, it is not necessarily true that humans were not responsible for the extinction of mammals in the Kaliko Islands.

Votes
Average: 4.6 (3 votes)
Essay Categories

Grammar and spelling errors:
Line 1, column 176, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Though” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...humans had no role in their extinction. Though the argument seems plausible it is base...
^^^^^^
Line 3, column 878, Rule ID: WHETHER[6]
Message: Can you shorten this phrase to just 'whether', or rephrase the sentence to avoid "as to"?
Suggestion: whether
...s and improved the clarity of statement as to whether small mammal bones were found or not th...
^^^^^^^^^^^^^
Line 7, column 116, Rule ID: SENTENCE_FRAGMENT[1]
Message: “If” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...pulation not affected by these changes. If there was a climate change human popula...
^^

Transition Words or Phrases used:
also, first, if, second, so, then, as to

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

Performance on Part of Speech:
To be verbs : 26.0 19.6327345309 132% => OK
Auxiliary verbs: 16.0 12.9520958084 124% => OK
Conjunction : 7.0 11.1786427146 63% => OK
Relative clauses : 12.0 13.6137724551 88% => OK
Pronoun: 33.0 28.8173652695 115% => OK
Preposition: 40.0 55.5748502994 72% => OK
Nominalization: 16.0 16.3942115768 98% => OK

Performance on vocabulary words:
No of characters: 2013.0 2260.96107784 89% => OK
No of words: 406.0 441.139720559 92% => More content wanted.
Chars per words: 4.95812807882 5.12650576532 97% => OK
Fourth root words length: 4.48881294772 4.56307096286 98% => OK
Word Length SD: 2.46068482097 2.78398813304 88% => OK
Unique words: 172.0 204.123752495 84% => More unique words wanted.
Unique words percentage: 0.423645320197 0.468620217663 90% => More unique words wanted or less content wanted.
syllable_count: 614.7 705.55239521 87% => OK
avg_syllables_per_word: 1.5 1.59920159681 94% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 4.96107784431 121% => OK
Article: 5.0 8.76447105788 57% => OK
Subordination: 7.0 2.70958083832 258% => Less adverbial clause wanted.
Conjunction: 0.0 1.67365269461 0% => OK
Preposition: 3.0 4.22255489022 71% => OK

Performance on sentences:
How many sentences: 22.0 19.7664670659 111% => OK
Sentence length: 18.0 22.8473053892 79% => The Avg. Sentence Length is relatively short.
Sentence length SD: 54.8501527454 57.8364921388 95% => OK
Chars per sentence: 91.5 119.503703932 77% => OK
Words per sentence: 18.4545454545 23.324526521 79% => OK
Discourse Markers: 1.81818181818 5.70786347227 32% => More transition words/phrases wanted.
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 3.0 5.25449101796 57% => OK
Sentences with positive sentiment : 6.0 8.20758483034 73% => OK
Sentences with negative sentiment : 11.0 6.88822355289 160% => OK
Sentences with neutral sentiment: 5.0 4.67664670659 107% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.250989545393 0.218282227539 115% => OK
Sentence topic coherence: 0.0861865310496 0.0743258471296 116% => OK
Sentence topic coherence SD: 0.061777098128 0.0701772020484 88% => OK
Paragraph topic coherence: 0.151430205354 0.128457276422 118% => OK
Paragraph topic coherence SD: 0.0461357709982 0.0628817314937 73% => OK

Essay readability:
automated_readability_index: 11.2 14.3799401198 78% => Automated_readability_index is low.
flesch_reading_ease: 61.67 48.3550499002 128% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 9.1 12.197005988 75% => OK
coleman_liau_index: 11.49 12.5979740519 91% => OK
dale_chall_readability_score: 7.45 8.32208582834 90% => OK
difficult_words: 75.0 98.500998004 76% => More difficult words wanted.
linsear_write_formula: 8.0 12.3882235529 65% => OK
gunning_fog: 9.2 11.1389221557 83% => OK
text_standard: 8.0 11.9071856287 67% => The average readability is low. Need to imporve the language.
What are above readability scores?

---------------------

Rates: 58.33 out of 100
Scores by essay e-grader: 3.5 Out of 6
---------------------
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.

argument 1 --not OK

argument 2 -- OK

argument 3 -- not OK
----------------

Attribute Value Ideal
Final score: 2.5 out of 6
Category: Poor Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 22 15
No. of Words: 406 350
No. of Characters: 1962 1500
No. of Different Words: 167 200
Fourth Root of Number of Words: 4.489 4.7
Average Word Length: 4.833 4.6
Word Length SD: 2.365 2.4
No. of Words greater than 5 chars: 130 100
No. of Words greater than 6 chars: 83 80
No. of Words greater than 7 chars: 47 40
No. of Words greater than 8 chars: 35 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 18.455 21.0
Sentence Length SD: 9.258 7.5
Use of Discourse Markers (%): 0.455 0.12
Sentence-Text Coherence: 0.355 0.35
Sentence-Para Coherence: 0.545 0.50
Sentence-Sentence Coherence: 0.153 0.07
Number of Paragraphs: 5 5