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' extinctio

Essay topics: 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, because there is no evidence that the humans had any significant contact with the mammals. Further, archaeologists have discovered numerous sites where the bones of fish had been discarded, but they found no such areas containing the bones of large mammals, so the humans cannot have hunted the mammals. Therefore, some climate change or other environmental factor must have caused the species' extinctions.

Write a response in which you examine the stated and/or unstated assumptions of the argument. Be sure to explain how the argument depends on these assumptions and what the implications are for the argument if the assumptions prove unwarranted.

sikun1990's picture

The conclusion that some climate change or environmental actor has to be the reason for the extinction of large mammal species from the Kaliko islands seems a bit skeptical. it is entirely based on the fact that humans were incapable to hunt these huge mammals. As the author of this passage suggests the findings of numerous quantities of discarded fish bones points towards the conclusion that humans were more inclined towards hunting smaller preys, upto some extend, mammals of comparable size (with humans). But this alone does not imply that the extinction has nothing to do with human activity.

As we know humans always have the tendency to overdo things. Evidences have also been found proving that humans were hunting fish on a large scale, and that could also be the case for many other mammals of comparable size. So it would have been quite probable that the humans of that time hunted on such a large scale that it led the ecosystem to completely unbalanced state. The large mammals could have actually died because of shortage of food, thus making humans an indirect cause for their extinction.

Now it is quite a stong statement to make that a single reason was sufficient in itself to cause such a mass extinction, usually there are multiple reasons that contribute .One such theory can be that the humans, with their excessive huting disturbed the equilibria of the the ecosystem. humans killed some animals (or even plants) which appeared in the food chain of the giant mammals and thus pushed them to a situation of famine. And this might have increased the inter-species competition among those mammals also increasing the deaths due to fight among themselves. now in such a havoc any small perturbation in the climatic condition is bound have enough force to wipe out an entire species.

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Comments

Grammar and spelling errors:
Line 1, column 175, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: It
...e Kaliko islands seems a bit skeptical. it is entirely based on the fact that huma...
^^
Line 1, column 464, Rule ID: SOME_EXTEND[1]
Message: Did you mean 'extent' ("extent" is a noun, "extend" is a verb)?
Suggestion: extent
...owards hunting smaller preys, upto some extend, mammals of comparable size with humans...
^^^^^^
Line 5, column 1, Rule ID: SENTENCE_FRAGMENT[1]
Message: “As” 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.
...nothing to do with human activity. As we know humans always have the tendency...
^^
Line 9, column 172, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...ere are multiple reasons that contribute .One such theory can be that the humans, ...
^^
Line 9, column 174, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: One
...e are multiple reasons that contribute .One such theory can be that the humans, wit...
^^^
Line 9, column 270, Rule ID: ENGLISH_WORD_REPEAT_RULE
Message: Possible typo: you repeated a word
Suggestion: the
...sive huting disturbed the equilibria of the the ecosystem. humans killed some animals o...
^^^^^^^
Line 9, column 270, Rule ID: DT_DT[1]
Message: Maybe you need to remove one determiner so that only 'the' or 'the' is left.
Suggestion: the; the
...sive huting disturbed the equilibria of the the ecosystem. humans killed some animals o...
^^^^^^^
Line 9, column 289, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Humans
...ed the equilibria of the the ecosystem. humans killed some animals or even plants whic...
^^^^^^
Line 9, column 336, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...killed some animals or even plants which appeared in the food chain of the giant ...
^^
Line 9, column 572, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Now
...e deaths due to fight among themselves. now in such a havoc any small perturbation ...
^^^

Transition Words or Phrases used:
actually, also, but, so, thus, as to

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

Performance on Part of Speech:
To be verbs : 13.0 19.6327345309 66% => OK
Auxiliary verbs: 5.0 12.9520958084 39% => OK
Conjunction : 6.0 11.1786427146 54% => More conjunction wanted.
Relative clauses : 13.0 13.6137724551 95% => OK
Pronoun: 27.0 28.8173652695 94% => OK
Preposition: 36.0 55.5748502994 65% => OK
Nominalization: 9.0 16.3942115768 55% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 1515.0 2260.96107784 67% => OK
No of words: 306.0 441.139720559 69% => More content wanted.
Chars per words: 4.95098039216 5.12650576532 97% => OK
Fourth root words length: 4.18244613648 4.56307096286 92% => OK
Word Length SD: 2.51104825159 2.78398813304 90% => OK
Unique words: 180.0 204.123752495 88% => More unique words wanted.
Unique words percentage: 0.588235294118 0.468620217663 126% => OK
syllable_count: 476.1 705.55239521 67% => OK
avg_syllables_per_word: 1.6 1.59920159681 100% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 4.96107784431 20% => OK
Article: 2.0 8.76447105788 23% => OK
Subordination: 2.0 2.70958083832 74% => OK
Conjunction: 3.0 1.67365269461 179% => OK
Preposition: 1.0 4.22255489022 24% => More preposition wanted as sentence beginning.

Performance on sentences:
How many sentences: 12.0 19.7664670659 61% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 25.0 22.8473053892 109% => OK
Sentence length SD: 62.0004480271 57.8364921388 107% => OK
Chars per sentence: 126.25 119.503703932 106% => OK
Words per sentence: 25.5 23.324526521 109% => OK
Discourse Markers: 3.0 5.70786347227 53% => More transition words/phrases wanted.
Paragraphs: 3.0 5.15768463074 58% => More paragraphs wanted.
Language errors: 10.0 5.25449101796 190% => OK
Sentences with positive sentiment : 0.0 8.20758483034 0% => More positive sentences wanted.
Sentences with negative sentiment : 9.0 6.88822355289 131% => OK
Sentences with neutral sentiment: 3.0 4.67664670659 64% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.190667952418 0.218282227539 87% => OK
Sentence topic coherence: 0.0735096603552 0.0743258471296 99% => OK
Sentence topic coherence SD: 0.0451740156317 0.0701772020484 64% => OK
Paragraph topic coherence: 0.127767416029 0.128457276422 99% => OK
Paragraph topic coherence SD: 0.0445341704962 0.0628817314937 71% => OK

Essay readability:
automated_readability_index: 14.6 14.3799401198 102% => OK
flesch_reading_ease: 46.1 48.3550499002 95% => OK
smog_index: 8.8 7.1628742515 123% => OK
flesch_kincaid_grade: 13.0 12.197005988 107% => OK
coleman_liau_index: 11.73 12.5979740519 93% => OK
dale_chall_readability_score: 8.9 8.32208582834 107% => OK
difficult_words: 78.0 98.500998004 79% => More difficult words wanted.
linsear_write_formula: 14.0 12.3882235529 113% => OK
gunning_fog: 12.0 11.1389221557 108% => OK
text_standard: 12.0 11.9071856287 101% => OK
What are above readability scores?

---------------------
Minimum four paragraphs wanted.

Rates: 50.0 out of 100
Scores by essay e-grader: 3.0 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.

Attribute Value Ideal
Final score: 2.0 out of 6
Category: Poor Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 9 15
No. of Words: 306 350
No. of Characters: 1478 1500
No. of Different Words: 173 200
Fourth Root of Number of Words: 4.182 4.7
Average Word Length: 4.83 4.6
Word Length SD: 2.454 2.4
No. of Words greater than 5 chars: 101 100
No. of Words greater than 6 chars: 68 80
No. of Words greater than 7 chars: 46 40
No. of Words greater than 8 chars: 32 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 34 21.0
Sentence Length SD: 18.203 7.5
Use of Discourse Markers (%): 0.667 0.12
Sentence-Text Coherence: 0.418 0.35
Sentence-Para Coherence: 0.618 0.50
Sentence-Sentence Coherence: 0.141 0.07
Number of Paragraphs: 3 5