The evidence presented by the archaeological findings at the Kaliko Islands seems to suggest that the extinction of the large mammals species was solely caused by humans. It is tempting to conform to this conclusion, but further examination of the correlation between these facts and the presented hypothesis can also point to a different cause or causes behind the extinction event. In this sense, before jumping to superficial conclusions, it would be a good idea to examine alternative explanations for the evidences presented while also considering possible missing parts of the puzzle.
One of the evidences presented is the finding of sites containing significant quantities of fish bones. This has been linked to the fishing activity of the humans in Kaliko Islands and by extrapolation, it has been deducted that these tribes likely also hunted mammals. If this was true, it would be expected to encounter a number of sites containing buried mammals bones, but nothing in the evidences presented seems to suggest this, making the idea of an extended practice of hunting mammals very unlikely.
Another evidence is related to the finding of primitive tools like stone knives, which have been tied to the possibility of these being used in hunting activities. Although still plausible arms, knives seem like a poor weapon of choice to hunt large mammals. Considering the size of these animals, more specialized tools as bow, arrows or other thrown weapons make more sense. Also, there is no mention in the evidences to the finding of old excavations for traps, which is a common indicator of hunting activities.
Considering the above, if the humans didn't caused the extinction of the large mammals, what caused it then? It is possible that the disappearance of these species is linked to a plague that affected them directly or lower links in the feeding chain, causing the extinction of grass feeding animals and predators. The finding of large quantities of non buried mammal remains scattered across the islands or microbiological examination of soil, water and vegetation samples could confirm this theory. It is also possible that the hunting and fishing type of tribes eventually evolved into more agricultural oriented ones, which could, in turn, affect the forest that served as habitat for these large mammals, putting it's existence to an end. If archaeological findings eventually confirm agricultural activities in the same time frame of the mammals extinction, this could be a good basis for this theory.
The findings of stone knives and bone fish burials are not enough to confirm the hypothesis that hunting caused the extinction of the large mammals in the Kaliko Islands. More evidence is needed to confirm this, as there are still missing facts and alternative theories that could explain this disappearance
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Essay evaluation report
Attribute Value Ideal
Final score: 3.5 out of 6
Category: Satisfactory Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 17 15
No. of Words: 457 350
No. of Characters: 2335 1500
No. of Different Words: 209 200
Fourth Root of Number of Words: 4.624 4.7
Average Word Length: 5.109 4.6
Word Length SD: 2.785 2.4
No. of Words greater than 5 chars: 179 100
No. of Words greater than 6 chars: 136 80
No. of Words greater than 7 chars: 80 40
No. of Words greater than 8 chars: 59 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 26.882 21.0
Sentence Length SD: 7.177 7.5
Use of Discourse Markers (%): 0.588 0.12
Sentence-Text Coherence: 0.345 0.35
Sentence-Para Coherence: 0.578 0.50
Sentence-Sentence Coherence: 0.074 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 1, column 127, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'mammals'' or 'mammal's'?
Suggestion: mammals'; mammal's
...uggest that the extinction of the large mammals species was solely caused by humans. It...
^^^^^^^
Line 7, column 38, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: didn't
... Considering the above, if the humans didnt caused the extinction of the large mamm...
^^^^^
Line 7, column 348, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...tors. The finding of large quantities of non buried mammal remains scattered acro...
^^
Line 7, column 843, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'mammals'' or 'mammal's'?
Suggestion: mammals'; mammal's
...ctivities in the same time frame of the mammals extinction, this could be a good basis ...
^^^^^^^
Transition Words or Phrases used:
also, but, if, so, still, then, while
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 20.0 19.6327345309 102% => OK
Auxiliary verbs: 7.0 12.9520958084 54% => OK
Conjunction : 13.0 11.1786427146 116% => OK
Relative clauses : 11.0 13.6137724551 81% => OK
Pronoun: 33.0 28.8173652695 115% => OK
Preposition: 67.0 55.5748502994 121% => OK
Nominalization: 18.0 16.3942115768 110% => OK
Performance on vocabulary words:
No of characters: 2389.0 2260.96107784 106% => OK
No of words: 456.0 441.139720559 103% => OK
Chars per words: 5.23903508772 5.12650576532 102% => OK
Fourth root words length: 4.62105577807 4.56307096286 101% => OK
Word Length SD: 2.82766443778 2.78398813304 102% => OK
Unique words: 212.0 204.123752495 104% => OK
Unique words percentage: 0.464912280702 0.468620217663 99% => OK
syllable_count: 752.4 705.55239521 107% => OK
avg_syllables_per_word: 1.6 1.59920159681 100% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 8.0 4.96107784431 161% => OK
Article: 3.0 8.76447105788 34% => OK
Subordination: 6.0 2.70958083832 221% => Less adverbial clause wanted.
Conjunction: 2.0 1.67365269461 119% => OK
Preposition: 5.0 4.22255489022 118% => OK
Performance on sentences:
How many sentences: 17.0 19.7664670659 86% => OK
Sentence length: 26.0 22.8473053892 114% => OK
Sentence length SD: 44.1483030745 57.8364921388 76% => OK
Chars per sentence: 140.529411765 119.503703932 118% => OK
Words per sentence: 26.8235294118 23.324526521 115% => OK
Discourse Markers: 2.17647058824 5.70786347227 38% => More transition words/phrases wanted.
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 4.0 5.25449101796 76% => OK
Sentences with positive sentiment : 5.0 8.20758483034 61% => OK
Sentences with negative sentiment : 5.0 6.88822355289 73% => OK
Sentences with neutral sentiment: 7.0 4.67664670659 150% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.157130740343 0.218282227539 72% => OK
Sentence topic coherence: 0.0618912464735 0.0743258471296 83% => OK
Sentence topic coherence SD: 0.0718457503636 0.0701772020484 102% => OK
Paragraph topic coherence: 0.09710530856 0.128457276422 76% => OK
Paragraph topic coherence SD: 0.03211183046 0.0628817314937 51% => OK
Essay readability:
automated_readability_index: 16.7 14.3799401198 116% => OK
flesch_reading_ease: 45.09 48.3550499002 93% => OK
smog_index: 11.2 7.1628742515 156% => OK
flesch_kincaid_grade: 13.4 12.197005988 110% => OK
coleman_liau_index: 13.41 12.5979740519 106% => OK
dale_chall_readability_score: 8.63 8.32208582834 104% => OK
difficult_words: 107.0 98.500998004 109% => OK
linsear_write_formula: 15.0 12.3882235529 121% => OK
gunning_fog: 12.4 11.1389221557 111% => OK
text_standard: 13.0 11.9071856287 109% => OK
What are above readability scores?
---------------------
Rates: 66.67 out of 100
Scores by essay e-grader: 4.0 Out of 6
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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.